округление на jQuery

<script type="text/javascript">
    $(document).ready(function(){
        var counter = 0;
        var sum = 0;
        $(".cgg").each(function()
        {
            // parseInt if integer
            valx = $(this).text();
            var news = valx.substr(1);
            suxm = parseFloat(news);
            if (suxm > 0){
                sum+= suxm;
                counter++;
            }
 
        });
        $('j:first').html(sum);

        var counter = 0;
        var sum = 0;

         $(".cgg2").each(function()
        {
            // parseInt if integer
            valx = $(this).text();
            var news = valx.substr(1);
            suxm = parseFloat(news);
            if (suxm > 0){
                sum+= suxm;
                counter++;
            }
 
        });
        $('k:first').html(sum);
    });

</script>