Show the dialog element
function(elementToChange) {
      var that        = this,
          firstField  = this.container.querySelector(SELECTOR_FORM_ELEMENTS);
      this.elementToChange = elementToChange;
      this._observe();
      this._interpolate();
      if (elementToChange) {
        this.interval = setInterval(function() { that._interpolate(true); }, 500);
      }
      dom.addClass(this.link, CLASS_NAME_OPENED);
      this.container.style.display = "";
      this.fire("show");
      if (firstField && !elementToChange) {
        try {
          firstField.focus();
        } catch(e) {}
      }
    }