/*
 * OpenSearch ajax suggestion engine für StaLa BW
 * Angepasst aus http://bits.wikimedia.org/skins-1.5/common/mwsuggest.js
 * Wilfred Berger September 2010
 * Änderungen (außer Auskommentierung) sind mit [Berger] markiert
 */

// search_box_id -> Results object
var os_map = {};
// cached data, url -> json_text
var os_cache = {};
// global variables for suggest_keypress
var os_cur_keypressed = 0;
var os_keypressed_count = 0;
// type: Timer
var os_timer = null;
// tie mousedown/up events
var os_mouse_pressed = false;
//var os_mouse_num = -1;
// if true, the last change was made by mouse (and not keyboard)
var os_mouse_moved = false;
// delay between keypress and suggestion (in ms)
var os_search_timeout = 250;
//// these pairs of inputs/forms will be autoloaded at startup
//var os_autoload_inputs = new Array('searchInput', 'searchInput2', 'powerSearchText', 'searchText');
//var os_autoload_forms = new Array('searchform', 'searchform2', 'powersearch', 'search' );
// if we stopped the service
var os_is_stopped = false;
// max lines to show in suggest table
var os_max_lines_per_suggest = 10;
//// number of steps to animate expansion/contraction of container width
//var os_animation_steps = 6;
//// num of pixels of smallest step
//var os_animation_min_step = 2;
//// delay between steps (in ms)
//var os_animation_delay = 30;
//// max width of container in percent of normal size (1 == 100%)
//var os_container_max_width = 2;
//// currently active animation timer
//var os_animation_timer = null;
//**
// * <datalist> is a new HTML5 element that allows you to manually supply
// * suggestion lists and have them rendered according to the right platform
// * conventions.  However, the only shipping browser as of early 2010 is Opera,
// * and that has a fatal problem: the suggestion lags behind what the user types
// * by one keypress.  (Reported as DSK-276870 to Opera's secret bug tracker.)
// * The code here otherwise seems to work, though, so this can be flipped on
// * (maybe with a UA check) when some browser has a better implementation.
// */
//// var os_use_datalist = 'list' in document.createElement( 'input' );
//var os_use_datalist = false;

/** Timeout timer class that will fetch the results */
function os_Timer( id, r, query ) {
	this.id = id;
	this.r = r;
	this.query = query;
}

/** Property class for single search box */
function os_Results( name, formname ) {
	this.searchform = formname; // id of the searchform
	this.searchbox = name; // id of the searchbox
	this.container = name + 'Suggest'; // div that holds results
	this.resultTable = name + 'Result'; // id base for the result table (+num = table row)
	this.resultText = name + 'ResultText'; // id base for the spans within result tables (+num)
	this.toggle = name + 'Toggle'; // div that has the toggle (enable/disable) link
	this.query = null; // last processed query
	this.results = null;  // parsed titles
	this.resultCount = 0; // number of results
	this.original = null; // query that user entered
	this.selected = -1; // which result is selected
	this.containerCount = 0; // number of results visible in container
	this.containerRow = 0; // height of result field in the container
	this.containerTotal = 0; // total height of the container will all results
	this.visible = false; // if container is visible
	this.stayHidden = false; // don't try to show if lost focus
}

//** Timer user to animate expansion/contraction of container width */
//function os_AnimationTimer( r, target ) {
//	this.r = r;
//	var current = document.getElementById(r.container).offsetWidth;
//	this.inc = Math.round( ( target - current ) / os_animation_steps );
//	if( this.inc < os_animation_min_step && this.inc >=0 ) {
//		this.inc = os_animation_min_step; // minimal animation step
//	}
//	if( this.inc > -os_animation_min_step && this.inc < 0 ) {
//		this.inc = -os_animation_min_step;
//	}
//	this.target = target;
//}

/******************
 * Initialization
 ******************/

//** Initialization, call upon page onload */
//function os_MWSuggestInit() {
//	for( i = 0; i < os_autoload_inputs.length; i++ ) {
//		var id = os_autoload_inputs[i];
//		var form = os_autoload_forms[i];
//		element = document.getElementById( id );
//		if( element != null ) {
//			os_initHandlers( id, form, element );
//		}
//	}
//}

/** Init Result objects and event handlers */
function os_initHandlers( name, formname, element ) {
	var r = new os_Results( name, formname );
	// event handler
	os_hookEvent( element, 'keyup', function( event ) { os_eventKeyup( event ); } );
	os_hookEvent( element, 'keydown', function( event ) { os_eventKeydown( event ); } );
	os_hookEvent( element, 'keypress', function( event ) { os_eventKeypress( event ); } );
//	if ( !os_use_datalist ) {
		// These are needed for the div hack to hide it if the user blurs.
		os_hookEvent( element, 'blur', function( event ) { os_eventBlur( event ); } );
		os_hookEvent( element, 'focus', function( event ) { os_eventFocus( event ); } );
		// We don't want browser auto-suggestions interfering with our div, but
		// autocomplete must be on for datalist to work (at least in Opera
		// 10.10).
		element.setAttribute( 'autocomplete', 'off' );
//	}
	// stopping handler
	os_hookEvent( document.getElementById( formname ), 'submit', function( event ) { return os_eventOnsubmit( event ); } );
	os_map[name] = r;
//	// toggle link
//	if( document.getElementById( r.toggle ) == null ) {
//		// TODO: disable this while we figure out a way for this to work in all browsers
//		/* if( name == 'searchInput' ) {
//			// special case: place above the main search box
//			var t = os_createToggle( r, 'os-suggest-toggle' );
//			var searchBody = document.getElementById( 'searchBody' );
//			var first = searchBody.parentNode.firstChild.nextSibling.appendChild(t);
//		} else {
//			// default: place below search box to the right
//			var t = os_createToggle( r, 'os-suggest-toggle-def' );
//			var top = element.offsetTop + element.offsetHeight;
//			var left = element.offsetLeft + element.offsetWidth;
//			t.style.position = 'absolute';
//			t.style.top = top + 'px';
//			t.style.left = left + 'px';
//			element.parentNode.appendChild( t );
//			// only now width gets calculated, shift right
//			left -= t.offsetWidth;
//			t.style.left = left + 'px';
//			t.style.visibility = 'visible';
//		} */
//	}
//
}

function os_hookEvent( element, hookName, hookFunct ) {
	if ( element.addEventListener ) {
		element.addEventListener( hookName, hookFunct, false );
	} else if ( window.attachEvent ) {
		element.attachEvent( 'on' + hookName, hookFunct );
	}
}

/********************
 *  Keyboard events
 ********************/

/** Event handler that will fetch results on keyup */
function os_eventKeyup( e ) {
	var targ = os_getTarget( e );
	var r = os_map[targ.id];
	if( r == null ) {
		return; // not our event
	}

	// some browsers won't generate keypressed for arrow keys, catch it
	if( os_keypressed_count == 0 ) {
		os_processKey( r, os_cur_keypressed, targ );
	}
	var query = targ.value;
	os_fetchResults( r, query, os_search_timeout );
}

/** catch arrows up/down and escape to hide the suggestions */
function os_processKey( r, keypressed, targ ) {
	if ( keypressed == 40 && !r.visible && os_timer == null ) {
		// If the user hits the down arrow, fetch results immediately if none
		// are already displayed.
		r.query = '';
		os_fetchResults( r, targ.value, 0 );
	}
//	// Otherwise, if we're not using datalist, we need to handle scrolling and
//	// so on.
//	if ( os_use_datalist ) {
//		return;
//	}
	if ( keypressed == 40 ) { // Arrow Down
		if ( r.visible ) {
			os_changeHighlight( r, r.selected, r.selected + 1, true );
		}
	} else if ( keypressed == 38 ) { // Arrow Up
		if ( r.visible ) {
			os_changeHighlight( r, r.selected, r.selected - 1, true );
		}
	} else if( keypressed == 27 ) { // Escape
		document.getElementById( r.searchbox ).value = r.original;
		r.query = r.original;
		os_hideResults( r );
//	} else if( r.query != document.getElementById( r.searchbox ).value ) {
//		// os_hideResults( r ); // don't show old suggestions
	}
}

/** When keys is held down use a timer to output regular events */
function os_eventKeypress( e ) {
	var targ = os_getTarget( e );
	var r = os_map[targ.id];
	if( r == null ) {
		return; // not our event
	}

	var keypressed = os_cur_keypressed;

	os_keypressed_count++;
	os_processKey( r, keypressed, targ );
}

/** Catch the key code (Firefox bug) */
function os_eventKeydown( e ) {
	if ( !e ) {
		e = window.event;
	}
	var targ = os_getTarget( e );
	var r = os_map[targ.id];
	if( r == null ) {
		return; // not our event
	}

	os_mouse_moved = false;

	os_cur_keypressed = ( e.keyCode == undefined ) ? e.which : e.keyCode;
	os_keypressed_count = 0;
}


/** When the form is submitted hide everything, cancel updates... */
function os_eventOnsubmit( e ) {
//	var targ = os_getTarget( e );

	os_is_stopped = true;
	// kill timed requests
	if( os_timer != null && os_timer.id != null ) {
		clearTimeout( os_timer.id );
		os_timer = null;
	}
//	// Hide all suggestions
//	for( i = 0; i < os_autoload_inputs.length; i++ ) {
//		var r = os_map[os_autoload_inputs[i]];
//		if( r != null ) {
//			var b = document.getElementById( r.searchform );
//			if( b != null && b == targ ) {
//				// set query value so the handler won't try to fetch additional results
//				r.query = document.getElementById( r.searchbox ).value;
//			}
//			os_hideResults( r );
//		}
//	}
    return true;
}



/**
 * Hide results from the user, either making the div visibility=hidden or
 * detaching the datalist from the input.
 */
function os_hideResults( r ) {
//	if ( os_use_datalist ) {
//		document.getElementById( r.searchbox ).setAttribute( 'list', '' );
//	} else {
		var c = document.getElementById( r.container );
		if ( c != null ) {
			c.style.visibility = 'hidden';
		}
//	}
	r.visible = false;
	r.selected = -1;
}

function os_decodeValue( value ) {
	if ( decodeURIComponent ) {
		return decodeURIComponent( value );
	}
	if( unescape ) {
		return unescape( value );
	}
	return null;
}

function os_encodeQuery( value ) {
	if ( encodeURIComponent ) {
		return encodeURIComponent( value );
	}
	if( escape ) {
		return escape( value );
	}
	return null;
}

/** Handles data from XMLHttpRequest, and updates the suggest results */
function os_updateResults( r, query, text, cacheKey ) {
	os_cache[cacheKey] = text;
	r.query = query;
	r.original = query;
	if( text == '' ) {
		r.results = null;
		r.resultCount = 0;
		os_hideResults( r );
	} else {
		try {
			var p = eval( '(' + text + ')' ); // simple json parse, could do a safer one
			if( p.length < 2 || p[1].length == 0 ) {
				r.results = null;
				r.resultCount = 0;
				os_hideResults( r );
				return;
			}
//			if ( os_use_datalist ) {
//				os_setupDatalist( r, p[1] );
//			} else {
				os_setupDiv( r, p[1] );
//			}
		} catch( e ) {
			// bad response from server or such
			os_hideResults( r );
			os_cache[cacheKey] = null;
		}
	}
}

//**
// * Create and populate a <datalist>.
// *
// * @param r       os_Result object
// * @param results Array of the new results to replace existing ones
// */
//function os_setupDatalist( r, results ) {
//	var s = document.getElementById( r.searchbox );
//	var c = document.getElementById( r.container );
//	if ( c == null ) {
//		c = document.createElement( 'datalist' );
//		c.setAttribute( 'id', r.container );
//		document.body.appendChild( c );
//	} else {
//		c.innerHTML = '';
//	}
//	s.setAttribute( 'list', r.container );
//
//	r.results = new Array();
//	r.resultCount = results.length;
//	r.visible = true;
//	for ( i = 0; i < results.length; i++ ) {
//		var title = os_decodeValue( results[i] );
//		var opt = document.createElement( 'option' );
//		opt.value = title;
//		r.results[i] = title;
//		c.appendChild( opt );
//	}
//}
//
//** Fetch namespaces from checkboxes or hidden fields in the search form,
//    if none defined use wgSearchNamespaces global */
//function os_getNamespaces( r ) {
//	var namespaces = '';
//	var elements = document.forms[r.searchform].elements;
//	for( i = 0; i < elements.length; i++ ) {
//		var name = elements[i].name;
//		if( typeof name != 'undefined' && name.length > 2 && name[0] == 'n' &&
//			name[1] == 's' && (
//				( elements[i].type == 'checkbox' && elements[i].checked ) ||
//				( elements[i].type == 'hidden' && elements[i].value == '1' )
//			)
//		) {
//			if( namespaces != '' ) {
//				namespaces += '|';
//			}
//			namespaces += name.substring( 2 );
//		}
//	}
//	if( namespaces == '' ) {
//		namespaces = wgSearchNamespaces.join('|');
//	}
//	return namespaces;
//}

/** Update results if user hasn't already typed something else */
function os_updateIfRelevant( r, query, text, cacheKey ) {
	var t = document.getElementById( r.searchbox );
	if( t != null && t.value == query ) { // check if response is still relevant
		os_updateResults( r, query, text, cacheKey );
	}
	r.query = query;
}

/** Fetch results after some timeout */
function os_delayedFetch() {
	if( os_timer == null ) {
		return;
	}
	var r = os_timer.r;
	var query = os_timer.query;
	os_timer = null;
	// [Berger] Pfad anders
//	var path = wgMWSuggestTemplate.replace( "{namespaces}", os_getNamespaces( r ) )
//									.replace( "{dbname}", wgDBname )
//									.replace( "{searchTerms}", os_encodeQuery( query ) );
	var path = vorschlaege + os_encodeQuery(query)

	// try to get from cache, if not fetch using ajax
	var cached = os_cache[path];
	if( cached != null && cached != undefined ) {
		os_updateIfRelevant( r, query, cached, path );
	} else {
		var xmlhttp = sajax_init_object();
		if( xmlhttp ) {
			try {
				xmlhttp.open( 'GET', path, true );
				xmlhttp.onreadystatechange = function() {
					// [Berger] wozu die Typabfrage?
//					if ( xmlhttp.readyState == 4 && typeof os_updateIfRelevant == 'function' ) {
					if ( xmlhttp.readyState == 4 ) {
						os_updateIfRelevant( r, query, xmlhttp.responseText, path );
					}
				};
				xmlhttp.send( null );
			} catch ( e ) {
				if ( window.location.hostname == 'localhost' ) {
					alert( "Your browser blocks XMLHttpRequest to 'localhost', try using a real hostname for development/testing." );
				}
				throw e;
			}
		}
	}
}

/** Init timed update via os_delayedUpdate() */
function os_fetchResults( r, query, timeout ) {
	if( query == '' ) {
		r.query = '';
		os_hideResults( r );
		return;
	} else if( query == r.query ) {
		return; // no change
	}

	os_is_stopped = false; // make sure we're running

	// cancel any pending fetches
	if( os_timer != null && os_timer.id != null ) {
		clearTimeout( os_timer.id );
	}
	// schedule delayed fetching of results
//	if( timeout != 0 ) {
		os_timer = new os_Timer( setTimeout( "os_delayedFetch()", timeout ), r, query );
//	} else {
//		os_timer = new os_Timer( null, r, query );
//		os_delayedFetch(); // do it now!
//	}
}

/** Find event target */
function os_getTarget( e ) {
	if ( !e ) {
		e = window.event;
	}
    // [Berger] das Folgende wurde in einen bedingten Ausdruck gewandelt
//	if ( e.target ) {
//		return e.target;
//	} else if ( e.srcElement ) {
//		return e.srcElement;
//	} else {
//		return null;
//	}
	return e.target? e.target: e.srcElement? e.srcElement: null;
}

/** Check if x is a valid integer */
function os_isNumber( x ) {
	if( x == '' || isNaN( x ) ) {
		return false;
	}
	for( var i = 0; i < x.length; i++ ) {
		var c = x.charAt( i );
		if( !( c >= '0' && c <= '9' ) ) {
			return false;
		}
	}
	return true;
}

/** Call this to enable suggestions on input (id=inputId), on a form (name=formName) */
function os_enableSuggestionsOn( inputId, formName ) {
	os_initHandlers( inputId, formName, document.getElementById( inputId ) );
}

//** Call this to disable suggestios on input box (id=inputId) */
//function os_disableSuggestionsOn( inputId ) {
//	r = os_map[inputId];
//	if( r != null ) {
//		// cancel/hide results
//		os_timer = null;
//		os_hideResults( r );
//		// turn autocomplete on !
//		document.getElementById( inputId ).setAttribute( 'autocomplete', 'on' );
//		// remove descriptor
//		os_map[inputId] = null;
//	}
//
//	// Remove the element from the os_autoload_* arrays
//	var index = os_autoload_inputs.indexOf( inputId );
//	if ( index >= 0 ) {
//		os_autoload_inputs[index] = os_autoload_forms[index] = '';
//	}
//}

/************************************************
 * Div-only functions (irrelevant for datalist)
 ************************************************/

/** Event: loss of focus of input box */
function os_eventBlur( e ) {
	var targ = os_getTarget( e );
	var r = os_map[targ.id];
	if( r == null ) {
		return; // not our event
	}
	if( !os_mouse_pressed ) {
		os_hideResults( r );
		// force canvas to stay hidden
		r.stayHidden = true;
		// cancel any pending fetches
		if( os_timer != null && os_timer.id != null ) {
			clearTimeout( os_timer.id );
		}
		os_timer = null;
	}
}

/** Event: focus (catch only when stopped) */
function os_eventFocus( e ) {
	var targ = os_getTarget( e );
	var r = os_map[targ.id];
	if( r == null ) {
		return; // not our event
	}
	r.stayHidden = false;
	// [Berger] Inhalt leeren oder markieren
	if( targ.value == "Suchbegriff" ) {
		targ.value = "";
	} else {
		targ.select();
	}
}

/**
 * Create and populate a <div>, for non-<datalist>-supporting browsers.
 *
 * @param r       os_Result object
 * @param results Array of the new results to replace existing ones
 */
function os_setupDiv( r, results ) {
	var c = document.getElementById( r.container );
	if ( c == null ) {
		c = os_createContainer( r );
	}
	c.innerHTML = os_createResultTable( r, results );
	// init container table sizes
	var t = document.getElementById( r.resultTable );
	r.containerTotal = t.offsetHeight;
	r.containerRow = t.offsetHeight / r.resultCount;
	os_fitContainer( r );
	os_trimResultText( r );
	os_showResults( r );
}

/** Create the result table to be placed in the container div */
function os_createResultTable( r, results ) {
	var c = document.getElementById( r.container );
	var width = c.offsetWidth - os_operaWidthFix( c.offsetWidth );
	var html = '<table class="os-suggest-results" id="' + r.resultTable + '" style="width: ' + width + 'px;">';
	r.results = new Array();
	r.resultCount = results.length;
	for( i = 0; i < results.length; i++ ) {
		var title = os_decodeValue( results[i] );
		r.results[i] = title;
		html += '<tr><td class="os-suggest-result" id="' + r.resultTable + i + '"><span id="' + r.resultText + i + '">' + title + '</span></td></tr>';
	}
	html += '</table>';
	return html;
}

/** Show results div */
function os_showResults( r ) {
	// [Berger] beide Bedingungen zusammen gefasst
//	if( os_is_stopped ) {
//		return;
//	}
//	if( r.stayHidden ) {
	if( os_is_stopped || r.stayHidden ) {
		return;
	}
	os_fitContainer( r );
	var c = document.getElementById( r.container );
	r.selected = -1;
	if( c != null ) {
		c.scrollTop = 0;
		c.style.visibility = 'visible';
		r.visible = true;
	}
}

function os_operaWidthFix( x ) {
	// For browsers that don't understand overflow-x, estimate scrollbar width
	if( typeof document.body.style.overflowX != 'string' ) {
		return 30;
	}
	return 0;
}

//** Brower-dependent functions to find window inner size, and scroll status */
//function f_clientWidth() {
//	return f_filterResults(
//		window.innerWidth ? window.innerWidth : 0,
//		document.documentElement ? document.documentElement.clientWidth : 0,
//		document.body ? document.body.clientWidth : 0
//	);
//}

function f_clientHeight() {
	return f_filterResults(
		window.innerHeight ? window.innerHeight : 0,
		document.documentElement ? document.documentElement.clientHeight : 0,
		document.body ? document.body.clientHeight : 0
	);
}

//function f_scrollLeft() {
//	return f_filterResults(
//		window.pageXOffset ? window.pageXOffset : 0,
//		document.documentElement ? document.documentElement.scrollLeft : 0,
//		document.body ? document.body.scrollLeft : 0
//	);
//}

function f_scrollTop() {
	return f_filterResults(
		window.pageYOffset ? window.pageYOffset : 0,
		document.documentElement ? document.documentElement.scrollTop : 0,
		document.body ? document.body.scrollTop : 0
	);
}

function f_filterResults( n_win, n_docel, n_body ) {
	var n_result = n_win ? n_win : 0;
	if ( n_docel && ( !n_result || ( n_result > n_docel ) ) ) {
		n_result = n_docel;
	}
	return n_body && ( !n_result || ( n_result > n_body ) ) ? n_body : n_result;
}

/** Get the height available for the results container */
function os_availableHeight( r ) {
	var absTop = document.getElementById( r.container ).style.top;
	var px = absTop.lastIndexOf( 'px' );
	if( px > 0 ) {
		absTop = absTop.substring( 0, px );
	}
	return f_clientHeight() - ( absTop - f_scrollTop() );
}

/** Get element absolute position {left,top} */
function os_getElementPosition( elemID ) {
	var offsetTrail = document.getElementById( elemID );
	var offsetLeft = 0;
	var offsetTop = 0;
	while ( offsetTrail ) {
		offsetLeft += offsetTrail.offsetLeft;
		offsetTop += offsetTrail.offsetTop;
		offsetTrail = offsetTrail.offsetParent;
	}
	if ( navigator.userAgent.indexOf('Mac') != -1 && typeof document.body.leftMargin != 'undefined' ) {
		offsetLeft += document.body.leftMargin;
		offsetTop += document.body.topMargin;
	}
	return { left:offsetLeft, top:offsetTop };
}

/** Create the container div that will hold the suggested titles */
function os_createContainer( r ) {
	var c = document.createElement( 'div' );
	var s = document.getElementById( r.searchbox );
	var pos = os_getElementPosition( r.searchbox );
	var left = pos.left;
	var top = pos.top + s.offsetHeight;
	c.className = 'os-suggest';
	c.setAttribute( 'id', r.container );
	document.body.appendChild( c );

	// dynamically generated style params
	// IE workaround, cannot explicitely set "style" attribute
	c = document.getElementById( r.container );
	c.style.top = top + 'px';
	c.style.left = left + 'px';
	c.style.width = s.offsetWidth + 'px';

	// mouse event handlers
	c.onmouseover = function( event ) { os_eventMouseover( r.searchbox, event ); };
	c.onmousemove = function( event ) { os_eventMousemove( r.searchbox, event ); };
	c.onmousedown = function( event ) { return os_eventMousedown( r.searchbox, event ); };
	c.onmouseup = function( event ) { os_eventMouseup( r.searchbox, event ); };
	return c;
}

/** change container height to fit to screen */
function os_fitContainer( r ) {
	var c = document.getElementById( r.container );
	var h = os_availableHeight( r ) - 20;
	var inc = r.containerRow;
	h = parseInt( h / inc ) * inc;
	if( h < ( 2 * inc ) && r.resultCount > 1 ) { // min: two results
		h = 2 * inc;
	}
	if( ( h / inc ) > os_max_lines_per_suggest ) {
		h = inc * os_max_lines_per_suggest;
	}
	if( h < r.containerTotal ) {
		// [Berger] die Höhe wird 4 Pixel höher
//		c.style.height = h + 'px';
		r.containerCount = parseInt( Math.round( h / inc ) );
	} else {
		// [Berger] die Höhe wird 4 Pixel höher
//		c.style.height = r.containerTotal + 'px';
		h = r.containerTotal
		r.containerCount = r.resultCount;
	}
	// [Berger] die Höhe wird 4 Pixel höher
	c.style.height = (h ) + 'px';
}

/** If some entries are longer than the box, replace text with "..." */
function os_trimResultText( r ) {
//	// find max width, first see if we could expand the container to fit it
//	var maxW = 0;
//	for( var i = 0; i < r.resultCount; i++ ) {
//		var e = document.getElementById( r.resultText + i );
//		if( e.offsetWidth > maxW ) {
//			maxW = e.offsetWidth;
//		}
//	}
	var w = document.getElementById( r.container ).offsetWidth;
//	var fix = 0;
//	if( r.containerCount < r.resultCount ) {
//		fix = 20; // give 20px for scrollbar
//	} else {
//		fix = os_operaWidthFix( w );
//	}
//	if( fix < 4 ) {
//		fix = 4; // basic padding
//	}
//	maxW += fix;
//
//	// resize container to fit more data if permitted
//	var normW = document.getElementById( r.searchbox ).offsetWidth;
//	var prop = maxW / normW;
//	if( prop > os_container_max_width ) {
//		prop = os_container_max_width;
//	} else if( prop < 1 ) {
//		prop = 1;
//	}
//	var newW = Math.round( normW * prop );
//	if( w != newW ) {
//		w = newW;
//		if( os_animation_timer != null ) {
//			clearInterval( os_animation_timer.id );
//		}
//		os_animation_timer = new os_AnimationTimer( r, w );
//		os_animation_timer.id = setInterval( "os_animateChangeWidth()", os_animation_delay );
//		w -= fix; // this much is reserved
//	}

	// trim results
//	if( w < 10 ) {
//		return;
//	}
	for( var i = 0; i < r.resultCount; i++ ) {
		var e = document.getElementById( r.resultText + i );
		var replace = 1;
		var lastW = e.offsetWidth + 1;
		var iteration = 0;
		var changedText = false;
		while( e.offsetWidth > w && ( e.offsetWidth < lastW || iteration < 2 ) ) {
			changedText = true;
			lastW = e.offsetWidth;
			var l = e.innerHTML;
			e.innerHTML = l.substring( 0, l.length - replace ) + '...';
			iteration++;
			replace = 4; // how many chars to replace
		}
		if( changedText ) {
			// show hint for trimmed titles
			document.getElementById( r.resultTable + i ).setAttribute( 'title', r.results[i] );
		}
	}
}

//** Invoked on timer to animate change in container width */
//function os_animateChangeWidth() {
//	var r = os_animation_timer.r;
//	var c = document.getElementById( r.container );
//	var w = c.offsetWidth;
//	var normW = document.getElementById( r.searchbox ).offsetWidth;
//	var normL = os_getElementPosition( r.searchbox ).left;
//	var inc = os_animation_timer.inc;
//	var target = os_animation_timer.target;
//	var nw = w + inc;
//	if( ( inc > 0 && nw >= target ) || ( inc <= 0 && nw <= target ) ) {
//		// finished !
//		c.style.width = target + 'px';
//		clearInterval( os_animation_timer.id );
//		os_animation_timer = null;
//	} else {
//		// in-progress
//		c.style.width = nw + 'px';
//		if( document.documentElement.dir == 'rtl' ) {
//			c.style.left = ( normL + normW + ( target - nw ) - os_animation_timer.target - 1 ) + 'px';
//		}
//	}
//}

/** Change the highlighted row (i.e. suggestion), from position cur to next */
function os_changeHighlight( r, cur, next, updateSearchBox ) {
	if ( next >= r.resultCount ) {
		next = r.resultCount - 1;
	}
	if ( next < -1 ) {
		next = -1;
	}
	r.selected = next;
	if ( cur == next ) {
		return; // nothing to do.
	}

	if( cur >= 0 ) {
		var curRow = document.getElementById( r.resultTable + cur );
		if( curRow != null ) {
			curRow.className = 'os-suggest-result';
		}
	}
	var newText;
	if( next >= 0 ) {
		var nextRow = document.getElementById( r.resultTable + next );
		if( nextRow != null ) {
			// [Berger] Klasse direkt
//			nextRow.className = os_HighlightClass();
			nextRow.className = 'os-suggest-result-hl';
		}
		newText = r.results[next];
	} else {
		newText = r.original;
	}

	// adjust the scrollbar if any
	if( r.containerCount < r.resultCount ) {
		var c = document.getElementById( r.container );
		var vStart = c.scrollTop / r.containerRow;
		var vEnd = vStart + r.containerCount;
		if( next < vStart ) {
			c.scrollTop = next * r.containerRow;
		} else if( next >= vEnd ) {
			c.scrollTop = ( next - r.containerCount + 1 ) * r.containerRow;
		}
	}

	// update the contents of the search box
	if( updateSearchBox ) {
		os_updateSearchQuery( r, newText );
	}
}

//function os_HighlightClass() {
//	var match = navigator.userAgent.match(/AppleWebKit\/(\d+)/);
//	if ( match ) {
//		var webKitVersion = parseInt( match[1] );
//		if ( webKitVersion < 523 ) {
//			// CSS system highlight colors broken on old Safari
//			// https://bugs.webkit.org/show_bug.cgi?id=6129
//			// Safari 3.0.4, 3.1 known ok
//			return 'os-suggest-result-hl-webkit';
//		}
//	}
//	return 'os-suggest-result-hl';
//}

function os_updateSearchQuery( r, newText ) {
	document.getElementById( r.searchbox ).value = newText;
	r.query = newText;
}


/********************
 *  Mouse events
 ********************/

/** Mouse over the container */
function os_eventMouseover( srcId, e ) {
	var targ = os_getTarget( e );
	var r = os_map[srcId];
	if( r == null || !os_mouse_moved ) {
		return; // not our event
	}
	var num = os_getNumberSuffix( targ.id );
	if( num >= 0 ) {
		os_changeHighlight( r, r.selected, num, false );
	}
}

/* Get row where the event occured (from its id) */
function os_getNumberSuffix( id ) {
	var num = id.substring( id.length - 2 );
	if( !( num.charAt( 0 ) >= '0' && num.charAt( 0 ) <= '9' ) ) {
		num = num.substring( 1 );
	}
	if( os_isNumber( num ) ) {
		return parseInt( num );
	} else {
		return -1;
	}
}

/** Save mouse move as last action */
function os_eventMousemove( srcId, e ) {
	os_mouse_moved = true;
}

/** Mouse button held down, register possible click */
function os_eventMousedown( srcId, e ) {
	var targ = os_getTarget( e );
	var r = os_map[srcId];
	if( r == null ) {
		return; // not our event
	}
	var num = os_getNumberSuffix( targ.id );

	os_mouse_pressed = true;
	if( num >= 0 ) {
		os_mouse_num = num;
		// os_updateSearchQuery( r, r.results[num] );
	}
	// keep the focus on the search field
	document.getElementById( r.searchbox ).focus();

	return false; // prevents selection
}

/** Mouse button released, check for click on some row */
function os_eventMouseup( srcId, e ) {
	var targ = os_getTarget( e );
	var r = os_map[srcId];
	if( r == null ) {
		return; // not our event
	}
	var num = os_getNumberSuffix( targ.id );

	if( num >= 0 && os_mouse_num == num ) {
		os_updateSearchQuery( r, r.results[num] );
		os_hideResults( r );
		document.getElementById( r.searchform ).submit();
	}
	os_mouse_pressed = false;
	// keep the focus on the search field
	document.getElementById( r.searchbox ).focus();
}

//** Toggle stuff seems to be dead code? */
//
//** Return the span element that contains the toggle link */
//function os_createToggle( r, className ) {
//	var t = document.createElement( 'span' );
//	t.className = className;
//	t.setAttribute( 'id', r.toggle );
//	var link = document.createElement( 'a' );
//	link.setAttribute( 'href', 'javascript:void(0);' );
//	link.onclick = function() { os_toggle( r.searchbox, r.searchform ); };
//	var msg = document.createTextNode( wgMWSuggestMessages[0] );
//	link.appendChild( msg );
//	t.appendChild( link );
//	return t;
//}
//
//** Call when user clicks on some of the toggle links */
//function os_toggle( inputId, formName ) {
//	r = os_map[inputId];
//	var msg = '';
//	if( r == null ) {
//		os_enableSuggestionsOn( inputId, formName );
//		r = os_map[inputId];
//		msg = wgMWSuggestMessages[0];
//	} else{
//		os_disableSuggestionsOn( inputId, formName );
//		msg = wgMWSuggestMessages[1];
//	}
//	// change message
//	var link = document.getElementById( r.toggle ).firstChild;
//	link.replaceChild( document.createTextNode( msg ), link.firstChild );
//}
//
//hookEvent( 'load', os_MWSuggestInit );