// Create a namespace for our utilities
var UTIL = UTIL || {};
UTIL.popup = UTIL.popup || {};

/**
 * Open popup window
 *
 * Opens a popup window using as little as a URL. An optional params object can
 * be passed.
 *
 * @param {String} href
 * @param {Object} params
 * @return {WindowObjectReference}
 */
UTIL.popup.open = function (href, params)
{
    // Defaults (don't leave it to the browser)
    var defaultParams = {
        "width":       "650",   // Window width
        "height":      "450",   // Window height
        // "top":         "0",     // Y offset (in pixels) from top of screen
        // "left":        "0",     // X offset (in pixels) from left side of screen
        "directories": "no",    // Show directories/Links bar?
        "location":    "no",    // Show location/address bar?
        "resizeable":  "yes",   // Make the window resizable?
        "menubar":     "no",    // Show the menu bar?
        "toolbar":     "no",    // Show the tool (Back button etc.) bar?
        "scrollbars":  "no",   // Show scrollbars?
        "status":      "yes"     // Show the status bar?
    };

    var windowName = params["windowName"] || "new_window";

    var i, useParams = "";

    // Override defaults with custom values while we construct the params string
    for (i in defaultParams)
    {
        useParams += (useParams === "") ? "" : ",";
        useParams += i + "=";
        useParams += params[i] || defaultParams[i];
    }

    return window.open(href, windowName, useParams);
};