function setPosition() {
	var w = 866;
	var h = 900;
	var s_w = screen.availWidth;
	var s_h = screen.availHeight;
	var x = eval ((s_w - w ) / 2);
	var y = eval ((s_h - h) / 2);
	self.resizeTo(w, h);
	self.moveTo (x, y);
}

function openPopUp(nome, titolo) {
	var w = (screen.availWidth);
	var h = (screen.availHeight);
	var settings = 'width='+w+', height='+h+', scrollbars=no, location=no, directories=no, status=no, menubar=no, toolbar=no, resizable=no, left=0, screenx=0, top=0,screen y=0';
	var win = window.open (nome, titolo, settings);void(0);
	win.focus();
}