var dername = null;


function openWindow(url,weite,hoehe)
{ 
	if (dername == null || navigator.appName != "Netscape" || dername.closed)
	{
	 	opt  = "dependent=0,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width="+weite+",height="+hoehe+",copyhistory=0";
		if (navigator.appVersion.substring(0, 1) >= 4)
		{
			xpos = 0;
		 	ypos = 0;
			opt += ",screenX="+xpos+",screenY="+ypos+",left="+xpos+",top="+ypos;
		}
		
		dername = window.open(url,"dername",opt);
		dername.focus();
	}
	else
	{
		dername.location = url;
		dername.focus();
	}
	
}

function ok()
{
	return true;
}
window.onerror = ok;