function Open(windowHeight, windowWidth, windowUri)
{
    var centerWidth = (window.screen.width - windowWidth) / 2;
    var centerHeight = (window.screen.height - windowHeight) / 2;

    newWindow = window.open(windowUri, 'window', 'scrollbars=1,resizable=0,width='+ windowWidth +',height=' + windowHeight + ',left='+centerWidth + ',top=' + centerHeight);

    newWindow.focus();
    return newWindow.name;
}