Gridview Footer Total calculation not working in asp.net master page

hi all this is my gridview  footer calculation script, this script is working good if the aspx page is independent , when i use the same script with my asp.net master page content page that script is not working    this is my script 

what changes i have to do for apply this script to be work in my master page content page in asp.net

function GrossTotal()
         {
            $("[id*=GridView1]input[type=text][id*=txtCalc]").keyup(function(e) {
                var price = $(this).closest('tr').find("input[type=text][id*=txtCalcPrice]").val();
                var quantity = $(e.target).closest('tr').find("input[type=text][id*=txtCalcQuantity]").val();
                var total = parseInt(price) * parseInt(quantity);
                $(e.target).closest('tr').find("[id*=lblGrossTotal]").text(total);
            });
        }