Question: s it possible to remove cancel button or 

override cancel button function from

local notification view?If yes then how we can achieve this

Answer: 
Have you [checked](http://www.java.com/en/download/testjava.jsp) that the [Java plugin](http://support.mozilla.org/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox) is working in Firefox?

Edit:
Apparently, FF [requires](http://www.java.com/en/download/faq/firefox_newplugin.xml) Java 6 Update 10 (or above) to work.
I had made these changes and after that it was working fine for me after searching a lot.

Go to 

* Control panel
* Java Control Panel
* Java Tab View
* IN run time parameters add this line

```none
-Djava.net.preferIPv4Stack=true

```