Open a window and center it : Window « Window Browser « JavaScript DHTML

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 =, "subWind", windowFeatures);


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23.References to Window Objects
24.Simple Notification: Display Window Info
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