function wop(url,width,height)
{
	w = window.open(url,'','width='+width+',height='+height+',status=no,menubar=no,resizable=no,scrollbars=yes,left='+String((screen.width-width)/2)+',top='+String((screen.height-height)/2));
	w.focus();
	return w;
}

function wop4href(url,width,height)
{
	w = window.open(url,'','width='+width+',height='+height+',status=no,menubar=no,resizable=no,scrollbars=yes,left='+String((screen.width-width)/2)+',top='+String((screen.height-height)/2));
	w.focus();
	return false;
}