jQuery .Net Deployment Issue

$('.nextButton').click(function() {

            var idString = '';

            $("div.dropZone > div").each(function(n) {
                idString += this.id + '|';
            });

            $.post('CustomPostHandler.aspx?step=criteria', {
                selected: idString
            },
                function(data) {
                    alert(data);
                });
        });

// Return dummy response to caller
        Response.Clear();
        Response.ContentType = "text/plain";
        Response.Write("success");
        Response.End();

$.post('CustomPostHandler.aspx?step=criteria&random=' + Math.random().toString(), {
            selected: idString
        },