// JavaScript Document
var myWindow;
function openCenteredWindow(url,w,h,name) {
    var width = parseInt(w);
    var height = parseInt(h);
    var left = parseInt((screen.availWidth/2) - (width/2));
    var top = 0;
    var windowFeatures = "width=" + width + ",height=" + height + ",location=no,status=no,toolbar=no,menubar=no,resizable=no,scrollbars=no,left=" + left + ",top=" + top + "screenX=" + left + ",screenY=" + top;
    myWindow = window.open(url, name, windowFeatures);
}