set value toFixed on blur

set value toFixed on blur

I have an input field that is used to insert a dollar amount.  If the user types in "100" or "100." I want to add two decimal places to the value using the toFixed(2) method.
 
This is what I'm trying, but it is undefined.
 
  1. var j$ = jQuery.noConflict();

    j$(document).ready(function(){

          var ccAmt = j$('[id$=Credit_Amount]').blur(function() {
                ccAmt.text( value.toFixed(2) );
          });
    });
 
Thanks for any help.