//------------------------------------------------------------------------------
//  http://keytrack.de  -  Keytrack.de  -  Keytrack.de Home  - 
//------------------------------------------------------------------------------
//***** required.js *****  some javascript formatting functions
//------------------------------------------------------------------------------

/*global document, window */

//-------------------------------------------------------------------------- ---

function array_push ( array ) {
    var i, argv = arguments, argc = argv.length;

    for (i=1; i < argc; i++){
        array[array.length++] = argv[i];
    }

    return array.length;
}

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var getElementsByClassName = function (className, tag, elm){
	if (document.getElementsByClassName) {
		getElementsByClassName = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	return getElementsByClassName(className, tag, elm);
};

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function getElementsByClass(theClass,node) {
    var classElements = [];
    var i;
    if ( node === null ) {
    	node = document;
    }
    if (node.getElementsByClassName) {
    	var tempCollection = node.getElementsByClassName(theClass);
        for (i = 0; i < tempCollection.length ; i++) {
    		classElements.push(tempCollection[i]);
    	}
    }
    else {
    	var els = node.getElementsByTagName("*");
    	var elsLen = els.length;
    	var pattern = new RegExp("(^|\\s)"+theClass+"(\\s|$)");
    	for (i = 0; i < elsLen; i++) {
    		if ( pattern.test(els[i].className) ) {
    			classElements.push(els[i]);
    		}
    	}
    }
    return classElements;
}

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var EventCache = function() {	
	var listEvents = [];	
	return {		
		listEvents : listEvents, 
		add : function(node, sEventName, fHandler) {			
			listEvents.push(arguments);		
		},		
		flush : function() {			
			var i, item;
			for(i = listEvents.length - 1; i >= 0; i = i - 1) {
				item = listEvents[i];
				if(item[0].removeEventListener) {
					item[0].removeEventListener(item[1], item[2], item[3]);
				}
				if(item[1].substring(0, 2) != "on") {
					item[1] = "on" + item[1];
				}
				if(item[0].detachEvent) {
					item[0].detachEvent(item[1], item[2]);
				}
				item[0][item[1]] = null;
			}
		}	
	};
}();

function addEvent( obj, type, fn ) 
{	
	if (obj.addEventListener) {	
		obj.addEventListener( type, fn, false );		
		EventCache.add(obj, type, fn);	
	} else if (obj.attachEvent) {		
		obj["e"+type+fn] = fn;		
		obj[type+fn] = function() { 
			obj["e"+type+fn]( window.event ); 
		};		
		obj.attachEvent( "on"+type, obj[type+fn] );		
		EventCache.add(obj, type, fn);	
	} else {		
		obj["on"+type] = obj["e"+type+fn];	
	}
} 

addEvent(window,'unload',EventCache.flush);

//-------------------------------------------------------------------------- ---