var rollover = false;
var preload;
var preloadList;
var clientName = null;
var brName = navigator.appName;
var clientVersion = parseInt(navigator.appVersion); 
var isIE = (brName == "Microsoft Internet Explorer" && clientVersion >= 4);
var isNav = (brName == "Netscape" && clientVersion >= 4);
var selectedImg
var countIt
function browserCheck()	{
	if (brName=="Microsoft Internet Explorer")
		clientName = "IE";
			else if (brName=="Netscape")
				clientName = "NN";
		if (document.images)
			rollover = true;
	if (navigator.appVersion.indexOf("Mac")>=0 && clientName == "IE" && clientVersion<=3)
  rollover = false;		
}

function init()	{	
	var i;
	var preloadList = new Array(); //genaue Url der Bilder definieren!
	preloadList[0] = "images_neu/cscevents-2.gif"
	preloadList[1] = "images_neu/cscprojects-2.gif"
	preloadList[2] = "images_neu/cscdemos-2.gif"
	preloadList[3] = "images_neu/csclinks-2.gif"
	preloadList[4] = "images_neu/cscmembers-2.gif"
	preloadList[5] = "images_neu/cscsearch-2.gif"
	preloadList[6] = "images_neu/cschomepage-2.gif"
	preloadList[7] = "images_neu/cscevents-1.gif"
	preloadList[8] = "images_neu/cscprojects-1.gif"
	preloadList[9] = "images_neu/cscdemos-1.gif"
	preloadList[10] = "images_neu/csclinks-1.gif"
	preloadList[11] = "images_neu/cscmembers-1.gif"
	preloadList[12] = "images_neu/cscsearch-1.gif"
	preloadList[13] = "images_neu/cschomepage-1.gif"
	browserCheck();
		if (rollover)	{
				preload = new Array(preloadList.length);
				for (i=0;i<preloadList.length;i++)	{
					preload[i] = new Image();
					preload[i].src = preloadList[i];
				}
			}
}


function changeOn(imgName)	{
	if (rollover)	{
   		eval('document.' + imgName + '.src = "images_neu/csc' + imgName + '-2.gif"'); 	//Bilder müssen Endung-g.gif, oder -w.gif haben
		}
	return true;
}

function changeOff(imgName)	{
	if (rollover)	{
		eval('document.' + imgName + '.src = "images_neu/csc' + imgName + '-1.gif"');
	}
	return true;
}