function popwindow( target_url ) 
{
	var newwin = open(target_url, "popup", "height=400,width=600,innerHeight=400,innerWidth=600,outerHeight=400,outerWidth=600,screenX=0,left=0,screenY=0,top=0,channelmode=0,dependent=0,directories=0,fullscreen=0,location=0,menubar=0,resizable=0,scrollbars=yes,status=yes,toolbar=no");
}