LinkButton in SharePoint - Not firing Click Event

1. General way
imageButton.OnClientClick = "this.form.onsubmit = function() {return true;}";
or
hyperLink.OnClientClick = "this.form.onsubmit = function() {return true;}";
or
linkButton.OnClientClick = "document.getElementsByTagName(\'form\')[0].onsubmit = function() {return true;}";

2.In SharePoint
linkButton.OnClientClick = "_spFormOnSubmitCalled = false;_spSuppressFormOnSubmitWrapper=true;";


Reference Link::  
http://dev-tips.blogspot.com/2009/12/linkbutton-in-sharepoint-not-firing.html