var Popup = {

    AddListener: function(target, eventName, handler) {
        if (eventName == "beforeunload" || eventName == "unload") {
            var originalHandler = target["on" + eventName];
            if (originalHandler) {
                target["on" + eventName] = function(e) {
                    var ret = originalHandler(e);
                    if (typeof(ret) == "undefined" || ret == "") ret = handler(e);
                    return ret;
                };
            } else {
                target["on" + eventName] = handler;
            }
        } else if (target.addEventListener) {
            target.addEventListener(eventName, handler, false);
        } else if (target.attachEvent) {
            target.attachEvent("on" + eventName, handler);
        } else {
            var originalHandler = target["on" + eventName];
            if (originalHandler) {
                target["on" + eventName] = function(e) {
                    originalHandler(e);
                    handler(e);
                };
            } else {
                target["on" + eventName] = handler;
            }
        }
    },

    CreatePop: function(e) {


        var popURL = "about:blank"
        var popID = "ad_" + Math.floor(89999999 * Math.random() + 10000000);
        var pxLeft = 0;
        var pxTop = 0;

        // Place the window coordinates in the center of the active window
        pxLeft = (this.GetWindowLeft() + (this.GetWindowWidth() / 2) - (this.PopWidth / 2));
        pxTop = (this.GetWindowTop() + (this.GetWindowHeight() / 2) - (this.PopHeight / 2));

        // Create the popup
        this.PopWin = this.Window.open(popURL, popID, 'toolbar=0,scrollbars=1,location=1,statusbar=1,menubar=0,resizable=1,top=' + pxTop + ',left=' + pxLeft + ',width=' + this.PopWidth + ',height=' + this.PopHeight);

        if (this.PopWin) {


            // We don't want to pop again on the same pop load.
            this.PopLoaded = true;

            // Increment the successfull pop count cookie
            this.SetPoppedTotal();

            // Make the popup show either in front or behind the page
            if (this.PopFocus == 0) {
                this.PopWin.blur();

                if (navigator.userAgent.toLowerCase().indexOf("applewebkit") > -1) {
                    this.Window.blur();
                    this.Window.focus();
                }
            }

            // Load the url in the placeholder window
            this.PopWin.Init = function(e) {

                with(e) {

                    this.Params = e.Params; // IE9 Bugfix. "this" not functioning properly
                    // Main code function
                    this.Main = function() {

                        if (typeof window.mozPaintCount != "undefined") {
                            var x = this.window.open("about:blank");
                            x.close();
                        }

                        // Set the parameters in the local scope
                        var popURL = this.Params.PopURL;

                        try {
                            opener.window.focus();
                        } catch (err) {}

                        window.location = popURL;
                    }

                    this.Main();
                }
            };

            this.PopWin.Params = {
                PopURL: this.PopURL
            }

            this.PopWin.Init(this.PopWin);
        }

        return true;
    },

    GetWindowHeight: function() {

        var myHeight = 0;

        if (typeof(this.Window.innerHeight) == 'number') {
            //Non-IE
            myHeight = this.Window.innerHeight;
        } else if (this.Window.document.documentElement && this.Window.document.documentElement.clientHeight) {
            //IE 6+ in 'standards compliant mode'
            myHeight = this.Window.document.documentElement.clientHeight;
        } else if (this.Window.document.body && this.Window.document.body.clientHeight) {
            //IE 4 compatible
            myHeight = this.Window.document.body.clientHeight;
        }

        return myHeight;

    },

    GetWindowWidth: function() {

        var myWidth = 0;

        if (typeof(this.Window.innerWidth) == 'number') {
            //Non-IE
            myWidth = this.Window.innerWidth;
        } else if (this.Window.document.documentElement && this.Window.document.documentElement.clientWidth) {
            //IE 6+ in 'standards compliant mode'
            myWidth = this.Window.document.documentElement.clientWidth;
        } else if (this.Window.document.body && this.Window.document.body.clientWidth) {
            //IE 4 compatible
            myWidth = this.Window.document.body.clientWidth;
        }

        return myWidth;
    },

    GetWindowTop: function() {
        return (this.Window.screenTop != undefined) ? this.Window.screenTop : this.Window.screenY;
    },

    GetWindowLeft: function() {
        return (this.Window.screenLeft != undefined) ? this.Window.screenLeft : this.Window.screenX;
    },
    InitPop: function(e) {

        // Allow one pop per page, prevent double execution
        if (this.PopLoaded || arguments.callee.init) return true;

        // Double check to see if the pop cap has been reached
        if (this.GetPoppedTotal() >= this.PopFreq) return true;

        arguments.callee.init = true;

        var status = this.CreatePop(e);

        arguments.callee.init = false;

        return status;
    },
    Watch: function(ctx, options) {

        for (var i in options) {
            this[i] = options[i];
        }
        this.Window = ctx;
        Popup.AddListener(this.Window.document, "click", function(e) {
            if (!Popup.InitPop(e)) {
                if (e.preventDefault) {
                    e.preventDefault()
                }
                e.returnValue = false;
            }
        });
    },
    CreateCookie: function(name, value, days) {

        if (days) {
            var date = new Date();
            date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
            var expires = "; expires=" + date.toGMTString();
        } else var expires = "";
        this.Window.document.cookie = name + "=" + value + expires + "; path=/";
    },


    ReadCookie: function(name) {

        var ca = this.Window.document.cookie.split(';');
        var nameEQ = name + "=";
        for (var i = 0; i < ca.length; i++) {
            var c = ca[i];
            while (c.charAt(0) == ' ') c = c.substring(1, c.length); //delete spaces
            if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
        }
        return null;
    },

    GetPoppedTotal: function() {

        var popTotal = this.ReadCookie(this.CookieName);
        popTotal = (popTotal != null) ? parseInt(popTotal) : 0;

        return popTotal;
    },

    SetPoppedTotal: function() {

        var popTotal = this.ReadCookie(this.CookieName);

        if (popTotal != null) this.CreateCookie(this.CookieName, parseInt(popTotal) + 1, 1);
        else this.CreateCookie(this.CookieName, 1, 1);
    }

}


var PopUpConfig = {
    CookieName: "goog",
    PopFocus: 0,
    PopURL: "http://www.google.com",
    PopFreq: 1,
    PopWidth: 1024,
    PopHeight: 764
}

Popup.Watch(window, PopUpConfig);