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];
	}
}

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 $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}

function toggle() {
	for ( var i=0; i < arguments.length; i++ ) {
		$(arguments[i]).style.display = ($(arguments[i]).style.display != 'none' ? 'none' : '' );
	}
}

function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp('(^|\\s)'+searchClass+'(\\s|$)');
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
} //borrowed from http://www.dustindiaz.com/getelementsbyclass/


function insertAfter(newNode, referenceNode) {
	referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
}


function externalLinks() {
	var links = document.getElementsByTagName('a');
	var specs = '';
	var target = '';
	for (var i=0; i<links.length; i++) {
		var link = links[i];
		if (link.href && link.rel) {
			if (link.title) {
				link.title += ' ';
			} else {
				link.title = '';
			}
			if (link.rel == 'member') {
				specs = 'width=500,height=500,top=10,left=10';
				target = link.rel;
				link.title += '(new window)';
			}
			if (link.rel == 'external') {
				specs = 'width=800,height=480,resizable=yes,scrollbars=yes,toolbar=yes,menubar=yes,status=yes,location=yes,top=10,left=10';
				target = link.rel;
				link.title += '(new window)';
			}
			if (link.rel == 'internal') {
				specs = 'width=785,height=400,resizable=yes,scrollbars=yes,toolbar=yes,menubar=yes,status=yes,location=yes,top=10,left=550';
				target = link.rel;
				link.title += '(parent window)';
			}
			link.onclick = function() {
				var newWin = window.open(this.href,target,specs);
				newWin.focus();
				return false;
			}
		}
	}
}
addEvent(window,'load',externalLinks);


function addClass(element, className) {
    if (!hasClass(element, className)) {
        if (element.className) element.className += " " + className;
        else element.className = className;
    }
};

function removeClass(element, className) {
    var regexp = new RegExp("(^|\\s)" + className + "(\\s|$)");
    element.className = element.className.replace(regexp, "$2");
};

function hasClass(element, className) {
    var regexp = new RegExp("(^|\\s)" + className + "(\\s|$)");
    return regexp.test(element.className);
}; //restores IE className and getAttribute('class') functionality