Unable to format the integer values in text boxes

Hi

   In my application, i have to format the integet values in JavaScript. I am using json object to fetch the values.I would like handle the formatting functionality in JavaScript.

Code:

 oServerSideTextBox = top.ltop.document.getElementById("jsonTextBox").value;
              if (oServerSideTextBox != "") {

                var oServerJSON = eval("(" + oServerSideTextBox + ")");
                
                 var i;
                 
                 for (i = 0; i < oServerJSON.length; i++) {
                     var row = oServerJSON[i];
                     var Val = row.Value;

                     $('#' + row.Name).val(Val);                   
                     
                 }
             }

I want to format the numeric values like 12345 -? 12,345

Thanks in advance

jdiaz