Greasemonkey Button Click

Can anyone please help me with clicking this button using greasemonkey? http://mibpaste.com/te6fRR (Full Source)

Solution 1:

var evt = document.createEvent ("HTMLEvents");
evt.initEvent ("click", true, true);
document.getElementById('fight_btn').dispatchEvent (evt);

See: http://wiki.greasespot.net/Generate_Click_Events

Solution 2:

Since createEvent and initEvent are now deprecated, the following uses the new MouseEvent() constructor instead:

document.getElementById("fight_btn").dispatchEvent(newMouseEvent('click'));

You could use getElementsByClassName("fight_btn")[0] instead of getElementById, of course.