var myWindow;

function openCenteredWindow(url) {
    var width = 450;
    var height = 600;
    var left = parseInt((screen.availWidth/2) - (width/2));
    var top = parseInt((screen.availHeight/2) - (height/2));
    var windowFeatures = "width=" + width + ",height=" + height + ",status,resizable,scrollbars ,left=" + left + ",top=" + top + "screenX=" + left + ",screenY=" + top;
    myWindow = window.open(url, "subWind", windowFeatures);
}

function openCenteredWindowGallery(url) {
    var width = 620;
    var height = 620;
    var left = parseInt((screen.availWidth/2) - (width/2));
    var top = parseInt((screen.availHeight/2) - (height/2));
    var windowFeatures = "width=" + width + ",height=" + height + ",status,resizable,scrollbars ,left=" + left + ",top=" + top + "screenX=" + left + ",screenY=" + top;
    myWindow = window.open(url, "subWind", windowFeatures);
}

function openCenteredWindowComments(url) {
    var width = 500;
    var height = 900;
    var left = parseInt((screen.availWidth/2) - (width/2));
    var top = parseInt((screen.availHeight/2) - (height/2));
    var windowFeatures = "width=" + width + ",height=" + height + ",status,resizable,scrollbars ,left=" + left + ",top=" + top + "screenX=" + left + ",screenY=" + top;
    myWindow = window.open(url, "subWind", windowFeatures);
}

function openCenteredWindowForum(url) {
    var width = 1100;
    var height = 800;
    var left = parseInt((screen.availWidth/2) - (width/2));
    var top = parseInt((screen.availHeight/2) - (height/2));
    var windowFeatures = "width=" + width + ",height=" + height + ",status, toolbar,resizable,scrollbars ,left=" + left + ",top=" + top + "screenX=" + left + ",screenY=" + top;
    myWindow = window.open(url, "subWind", windowFeatures);
}

function openCenteredWindowEmailThis(url) {
    var width = 700;
    var height = 700;
    var left = parseInt((screen.availWidth/2) - (width/2));
    var top = parseInt((screen.availHeight/2) - (height/2));
    var windowFeatures = "width=" + width + ",height=" + height + ",status,resizable,scrollbars ,left=" + left + ",top=" + top + "screenX=" + left + ",screenY=" + top;
    myWindow = window.open(url, "subWind", windowFeatures);
}