[jQuery] Rounding numbers

[cfred]

I am having trouble rounding numbers in the code below. I would like
"insulBlocks" to round up to a whole number and "8Blocks", "10Blocks"
& "12Blocks" to round to 2 decimal places.

I've tried several things but being a newbie I'm guessing I'm just
putting things in the wrong place.

Thanks for reading.



$(document).ready(function(){
        $(":text").change(function() {
                //alert(             (   (           
($("#houseLength").val()*1) + ($
("#houseWidth").val()*1)        )*2          ) * ($("#wallHeight").val
()*1)                     );
                //alert((($("#houseLength").val()*1) + 
($("#houseWidth").val()*1))
*2) * ($("#wallHeight").val()*1);
                // SET DISPLAY
                //$("#totalArea").html((($("#houseLength").val()*1) + ($
("#houseWidth").val()*1))*2) * ($("#wallHeight").val()*1);
                $("#totalArea").html(((($("#houseLength").val()*1) + ($
("#houseWidth").val()*1))*2) * ($("#wallHeight").val()*1));
                $("#insulBlocks").html(parseInt($("#totalArea").html()) / .889 
* 2);


                $("#8Blocks").html(parseInt($("#insulBlocks").html()) * .25);
                $("#10Blocks").html(parseInt($("#insulBlocks").html()) * .35);
                $("#12Blocks").html(parseInt($("#insulBlocks").html()) * .55);

        });

        $("#clear").click(function() {
          $(":text").val("");
          $(".result").html("");
          $("#houseLength").focus();
          return false;
        });

        $("#quoteit").click(function() {
                $("#carton").submit();
        });

});