On my purchase order form, I had to change the "Price" column of my table to be a number rather than currency, as I needed my users to be able to put in pricing that reflected more than 2 decimal places.  When the calculation is running through javascript to multiply the "Quantity" value by the "Price" value, the result is not being rounded.  Does the Math.round function round on a 5/4 split?  If so, can someone tell me how to implement this into my existing script?  I tried the script to force all currency fields to round on change, but that is not working.  For instance, I can put a quantity of 177 into my form with a price of 0.205, and the result is displaying $36.28; however, if it were rounding on a 5/4 split, it should display $36.29.  

$(document).ready(function(){
  
  //hide Hidden User field
  var $hidden = $('#q71');
  $hidden.hide();
  //hide Hidden Company Name field
  var $hidden = $('#q37');
  $hidden.hide();
  //hide Hidden Vendor Type field
  var $hidden = $('#q73');
  $hidden.hide();
  //hide Hidden Vendor Name field
  var $hidden = $('#q75');
  $hidden.hide();
  
  
  //Round any entries made to the Ext. Total field
  $('.currency').change(function() {
    $(this).val(formatCurrency($(this).val()));
  });
  
  function formatCurrency(value) {
    var float = parseFloat(value);
    return isNaN(float) ? 0 : (Math.round(float*100)/100).toFixed(2);
  }
  
  
  
  //Calculate line item totals, subtotal, and grand total
  $('.cf-table-block').on('blur', 'input', sumtotal);
  $('.tax').on('blur', 'input', sumtotal);
  $('.shipping').on('blur', 'input', sumtotal);
  function sumtotal() {
    var sum = 0;
    $('.cf-table-block tbody tr').each(function () {
      var s = 0;
      s = parseNumber($(this).find('.price input').val()) * parseNumber($(this).find('.quantity input').val());
      $(this).find('.subtotal input').val((s).toFixed(2));
      sum += s; 
    });
  $('.total input').val((sum).toFixed(2));
  $('.grandTotal input').val((sum + parseNumber($('.tax input').val()) + parseNumber($('.shipping input').val())).toFixed(2));  
  $('.ro input').attr('readonly', 'True'); //makes the fields read only after we give them a value.

  }
 function parseNumber(n) {
   var f = parseFloat(n); //Convert to float number.
   return isNaN(f) ? 0 : f; //treat invalid input as 0;
   }




  

  //SET THE HIDDEN VENDOR NAME VARIABLE FOR USE WHEN SAVING TO LASERFICHE:
  //Whenever the Vendor or New Vendor fields are changed, if the New Vendor field is empty,
  //fill the Hidden Vendor Name field with the value from the Vendor field.  
  //Otherwise, fill the Hidden Vendor Name field with the value from the New Vendor field.

  $('.vendor select').change(grabVend);
  $('.newvendor input').change(grabVend);
   
  function grabVend(){
    var hdnvndnm = 0;
    var vndnm = 0;
    vndnm = $('.vendor select').val();
    console.log(vndnm);
    var newvend = 0;
    newvend = $('.newvendor input').val();
    console.log(newvend);
    
    if ((!$('.newvendor input').val())) {
      $('.hdnvendor input').val(vndnm);
    } 
    else {
      $('.hdnvendor input').val(newvend);
    }
    hdnvndnm = $('.hdnvendor input').val();
    console.log(hdnvndnm);
}
  
  
  
  
  
  //handle other scripted activities here
  
});

Thanks for any help you can provide.