Trigger Javascript

Hello Experts,

I have some fields on the view corresponding to a value node. One of the fields is Phone number. When the user enters the phone number and moves to next field, I want to trigger a JavaScript function that formats the phone number.

I tired like this:

<script for="//CONTEXTNODE/ATTRIBUTE" event=onblur type="text/javascript" >

function()

{

-- code;

}

</script>

But, it's not getting triggered. Can someone please help me with this?

Thank you.

-Ezhno.