Interstitial ad object

interstitial.js

ENGAGE.Interstitial = function(options) {
    if (!(this instanceof ENGAGE.Interstitial)) {
        return new ENGAGE.Interstitial(options);
    }

    if (typeof options !== "undefined") {
        this.blocked_class = options.blocked_class || this.blocked_class;
        this.close_control = options.close_control || this.close_control;
        this.container = options.container || this.container;
        this.countdown = options.countdown || this.countdown;
        this.fade_time = options.fade_time || this.fade_time;
        this.modal_screen = options.modal_screen || this.modal_screen;
        this.timer = options.timer || this.timer;
    }

    return this;

};

ENGAGE.Interstitial.prototype.blocked_class = 'blocked';
ENGAGE.Interstitial.prototype.close_control = jQuery('#interstitial-header .close-btn');
ENGAGE.Interstitial.prototype.container = jQuery('#interstitial-container');
ENGAGE.Interstitial.prototype.countdown = jQuery("#interstitialCountdown");
ENGAGE.Interstitial.prototype.fade_time = 500;
ENGAGE.Interstitial.prototype.modal_screen = jQuery('<div class="interstitial-modal-screen"><iframe src="javascript:false;"></iframe></div>');
ENGAGE.Interstitial.prototype.timer = 15;

ENGAGE.Interstitial.prototype.open = function() {
    var that = this;

    jQuery('body').addClass(this.blocked_class).append(this.modal_screen);
    this.modal_screen
      .css('opacity', 0.9)
      .height(jQuery(window).height())
      .width(jQuery(window).width())
      .children(0).css('opacity',0);

    this.modal_screen.fadeIn(this.fade_time, function() {
        that.container.show();
    });
};

ENGAGE.Interstitial.prototype.close = function() {
    jQuery('body').removeClass(this.blocked_class);
    this.modal_screen.remove();
    this.container.remove();
};

ENGAGE.Interstitial.prototype.interCountDown = function(count) {
    var that = this;

    if (count >= 0) {
        this.countdown.html(count);
        setTimeout(function () {
            that.interCountDown(count - 1);
        }, 1000);
    }
    else {
        this.close();
    }
};

ENGAGE.Interstitial.prototype.init = function() {
    if (typeof jQuery === "undefined") {
        if (window.console && window.console.log) {
            console.log("jQuery is not defined before the Interstitial methods are being called");
        }
        return;
    }
    else {
        var that = this;

        this.open();
        this.interCountDown(this.timer);
        this.close_control.on('click', function() {
            that.close();
        });

        return this;

    }
};