Emulate clicking a link with Javascript that works with IE

Question

I want to have java script clicking a link on the page..I found something on the net that suggests adding a function like this:

function fireEvent(obj,evt){      var fireOnThis = obj;     if( document.createEvent ) {       var evObj = document.createEvent('MouseEvents');       evObj.initEvent( evt, true, false );       fireOnThis.dispatchEvent(evObj);     } else if( document.createEventObject ) {       fireOnThis.fireEvent('on'+evt);     } } 

Then call it using:

fireEvent(document.getElementById('edit_client_link'),'click'); 

This seems to work fine for FF but with IE it doesn't work!

Any ideas?