function popupWin(file,Iwidth,Iheight)
{
	var newWin1=window.open(file,'sito','x=0,y=0,toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=no,copyhistory=no,width='+Iwidth+',height='+Iheight+',screenX=0,screenY=0,left=20,top=20');
}