Open a window and center it
var myWindow;
function openCenteredWindow(url) {
var width = 400;
var height = 300;
var left = parseInt((screen.availWidth/2) - (width/2));
var top = parseInt((screen.availHeight/2) - (height/2));
var windowFeatures = "width=" + width + ",height=" + height + ",status,resizable,left=" + left + ",top=" + top + "screenX=" + left + ",screenY=" + top;
myWindow = window.open(url, "subWind", windowFeatures);
}
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