function getObjectRefString( strName )
	{
		strRef = "";
		if( document.layers )
		{
			strRef = "document.layers[ \"" + strName + "\" ]";
		}
		else
		{
			if( document.all )
			{
				strRef = "document.all." + strName + ".style";
			}
			else
			{
				if( document.getElementById( strName ) )
				{
					strRef = "document.getElementById( \"" + strName + "\" )";
					if( document.getElementById( strName ).style )
					{
						strRef += ".style";
					}
				}
				else
				{
					return false;
				}
			}
		}
		return strRef;
	}
	
	//set postion off main <div></div>
	function checkPos(){
		var isIE = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
		var isWin = (navigator.appVersion.indexOf("Windows") != -1) ? true : false;
		if(isIE) {
			leftPos = (document.body.offsetWidth-766)/2;
			topPos = (document.body.offsetHeight-450)/2;
		} else {
			leftPos = (window.innerWidth-766)/2;
			topPos = (window.innerHeight-450)/2;
		}
		
		if(leftPos <= 10) leftPos=0;
		if(topPos <= 10) topPos=0;

		pos = getObjectRefString("containerMain");
		pos = eval(pos);
		pos.top = topPos+"px";
		pos.left = leftPos+"px";
		pos.visibility = "visible";
	}
	
	//refresh position after resizing
	window.onresize = neu;
	function neu() {
		checkPos();
	}
	
	//set once onload
	function showText() {
		text = getObjectRefString("text0");
		text = eval(text);
		text.visibility = "visible";
	}
	
	//functions to preload und display example-images
	function showmouse(example) {
			example = eval(getObjectRefString("example"+example));
			example.cursor='pointer';
			return example;
		}
				
	function imageOver(imgNum) {
		showmouse(imgNum);
	}
		
	function imageClick(imgNum,numberOfLayer) {
		//alert(imgNum+"###"+numberOfLayer+"###"+folder)
		for(i=0;i<numberOfLayer;i++) {
			showlayer = eval(getObjectRefString("text"+i));
			if(i==imgNum) {
				showlayer.visibility = "visible";
			} else {
				showlayer.visibility = "hidden";
			}
		}
		document.exampleBig.src= eval(imageArray[imgNum]+".src");
	}