function popup(page,width,height)
{
var w=width;
var h=height;
var x=(screen.availWidth-w)/2;
var y=(screen.availHeight-h)/2;
var finestra=window.open(page,'','left=0,top=0,width='+w+',height='+h+',left='+x+',top='+y+',toolbar=no,directories=no,location=no,status=no,menubar=no,copyhistory=no,scrollbar=no');
finestra.creator=self;
}

function popupside(page,width,height)
{
var w=width;
var h=height;
var x=(screen.availWidth-w)/100;
var y=(screen.availHeight-h)/100;
var finestra=window.open(page,'','left=0,top=0,width='+w+',height='+h+',left='+x+',top='+y+',toolbar=no,directories=no,location=no,status=no,menubar=yes,copyhistory=no,scrollbar=no');
finestra.creator=self;
}