c# javascript in browser

I am trying to automatically click on a button on a webpage. An example of the button can be found here: http://www.movshare.net/video/ut55cfdv开发者_开发百科g5wgj/?

I can get rid of it with javascript in firefox usin firebug, but when I'm trying the same script in c# with the browser controll it doesn't work.

The script is:

btn = document.getElementsByName("submit"); 
btn[0].click();

Any help would be nice.

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.click would refer to the corresponding event, try;

.Document.All.GetElementsByName("submit")[0].InvokeMember("click");