// <![CDATA[
function popup(url, name, w, h, sizable) {
	x = Math.round(screen.width - w) / 2;
	y = Math.round(screen.height - h) / 2;
	params = "location=no,directories=no,status=no,menubar=no,toolbar=no,copyhistory=no,width="+w+",height="+h+",scrollbars=yes,left="+x+",top="+y;
	if (sizable) params = params + ",resizable=yes";
	win = window.open(url, name, params);
	win.focus();
}
// ]]>