function preloadImage(imgObj, imgSrc)
{
	if (document.images) {
		eval(imgObj+' = new Image()');
		eval(imgObj+'.src = "'+imgSrc+'"');
	}
}

function changeImage(imgName, imgObj)
{
	if (document.images) {
		document.images[imgName].src = eval(imgObj+".src");
	}
}

function neuesFenster(strURL, winName, winWidth, winHeight, isResizeable, hasScrollbar)
{
	window.open(strURL,winName,"width="+winWidth+",height="+winHeight+",status=no,resizable="+isResizeable+",scrollbars="+hasScrollbar);
}