VKontakte click by element

Question

I want click by some element in VKontakte web application from JS, but it not possible.

For example I go to this application http://vk.com/app2797985. I want click by element with id: likeBlock_button_like.

Standart JS code for clicking by element:

javascript:document.getElementById('likeBlock_button_like').click();

but this code dont work with this application. How to solve this problem?

Answer 1

The reason you cannot access the element is because it is inside an iframe. Since the iframe is from different domain, you cannot access dom elements through javascript due to Same origin policy