// <!--
function Fenster(Link,WindowName,WinWidth,WinHeight) {
	if(win){win.close();}
 	var win = window.open(Link,WindowName,'width='+WinWidth+',height='+WinHeight+',toolbar=no,menubar=no,scrollbars=yes');
   	win.moveTo(((screen.width-700)/2),((screen.height-530)/2));
	win.resizeTo(WinWidth,WinHeight);
	win.focus();
}
// -->