function popup(url) 
{
	 var width  = screen.width;
	 var height = screen.height;
	 var left   = 0;
	 var top    = 0;
	 var params = 'width='+width+', height='+height;
	 params += ', top='+top+', left='+left;
	 params += ', directories=yes';
	 params += ', location=yes';
	 params += ', menubar=yes';
	 params += ', resizable=yes';
	 params += ', scrollbars=yes';
	 params += ', status=yes';
	 params += ', toolbar=yes';
	 newwin=window.open(url,'clientpopup', params);
	 if (window.focus) {newwin.focus()}
		 return false;
}