function details(pfad, b, h) 
{	
	if (b == null) { var b = 750; }
	if (h == null) { var h = window.screen.availHeight-100;	}
	var offset = 25;
	
	var links = (window.screen.availWidth-b)/2;
	var oben = ((window.screen.availHeight-h)/2)-offset;
	newwin = window.open(pfad,'lade','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=1,resizable=0,copyhistory=no,width='+b+',height='+h+',top='+oben+',left='+links); 
	setTimeout('newwin.focus();',200); 
}