function toDollarsAndCents(n) {
  var s = "" + Math.round(n * 100) / 100
  var i = s.indexOf('.')
  if (i < 0) return s + ".00"
  var t = s.substring(0, i + 1) + s.substring(i + 1, i + 3)
  if (i + 2 == s.length) t += "0"
  return t
}



// START - unit pricing
function create_save_price(){

var qty = document.itemForm.vwquantity.value;
var cost = 0;
var orig_cost = 0;
var save_cost = 0;

var costs = savePrice.split(" ");
costs[0] = costs[0].replace("(", "");
costs[costs.length - 1] = costs[costs.length - 1].replace(")", "");
for(var k = 0; k<costs.length; k++){
  costs[k] = Math.round(parseFloat(costs[k]) * 100)/100;
}
if(costs.length == 1){
cost = costs[0];
}
for(var j = 1; j < costs.length; j+=2){
  if(j+2 < costs.length){
    if(costs[j+2]>qty && costs[j]<=qty){
      cost = (costs[j+1]/costs[j]);
      break;
    } else if(costs[j]>qty){
       cost = costs[0];
       break;
    }
  } else {
    cost = (costs[j+1]/costs[j]);
    break;
  }
}
orig_cost = origPrice * qty;
cost = cost * qty;


save_cost = orig_cost - cost;
//save_cost = (Math.round(save_cost * 100)/100).toFixed(2);
//save_cost = toDollarsAndCents(save_cost);
save_cost = save_cost.toFixed(2);
save_cost = '$' + save_cost;
if(document.getElementById('mssYouSaveInput')){
  document.getElementById('mssYouSaveInput').value = save_cost;
}
//writeDiscount();

}
// END - unit pricing