function winopen(datei)
		{
		win=window.open(datei,"as","directories=0,location=0,menubar=0,status=0,scrollbars=yes,toolbar=0,width=500,height=400");
		win.focus();
		return 0;
		}		
		  
		function act(imgPath, imgName) {
			var img_object = new Image();
			document[imgName].src = imgPath + "nav/" + imgName + "_on.gif";
			eval(img_object.src);
        }

		function inact(imgPath, imgName) {
			var img_object = new Image();
			document[imgName].src = imgPath + "nav/" + imgName + "_off.gif";
			eval(img_object.src);
        }