<!--
function centerPopup(popup_name,popup_url,popup_with,popup_height,myWidth,myHeight)
{   if(!myWidth) {myWidth = 0;}
	if(!myHeight){myHeight = 0;}
	var popup_left = (window.screen.width/2)  - (popup_with/2 + myWidth);
	var popup_top  = (window.screen.height/2) - (popup_height/2 + myHeight);
	var fenster = window.open(popup_url ,popup_name,"toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=no,width=" + popup_with + ",height=" + popup_height + ",left=" + popup_left + ",top=" + popup_top + ",screenX=" + popup_left + ",screenY=" + popup_top);
	fenster.focus();
}
//-->