   this.pageType = pageType;
       this.templateName = templateName;
     }

     ErrorPage.prototype.centerContent = function () {
       var containerHeight = this.$container.outerHeight()
         , contentContainerHeight = this.$contentContainer.outerHeight()
         , top = (containerHeight - contentContainerHeight) / 2
         , offset = this.templateName == 'sign' ? -100 : 0;

       this.$contentContainer.css('top', top + offset);
     };

     ErrorPage.prototype.initialize = function () {
     