function popwin(file,width,height,resizable,scrollbars)
{
	if (resizable=="") resizable=0;
	if (scrollbars=="") scrollbars=0;
	stringa="'fullscreen=0,status=0,toolbar=0,menubar=0,location=0,directories=0,titlebar=0,location=0,resizable="+resizable+",scrollbars="+scrollbars+"'";
    window.open(file,'',stringa);
}