var myWindow;
function openMessager() {
    var width = 550;
    var height = 440;
    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("/live_support.html", "subWind", windowFeatures);
	return false;
}
function openCenteredWindow(id) {
    var width = 460;
    var height = 640;
    var left = parseInt((screen.availWidth/2) - (width/2));
    var top = parseInt((screen.availHeight/2) - (height/1));
    var windowFeatures = "width=" + width + ",height=" + height + 
        ",status,resizable,left=" + left + ",top=" + top + 
        "screenX=" + left + ",screenY=" + top;
    myWindow = window.open("/zoom/"+id, "subWind", windowFeatures);
    
}