oh the romanity

romanity.js

function convert(num) {
 var remainder = num;
 var result = "";
 while(remainder > 0){
   var number = closestNumeralWithoutGoingOver(remainder);
   result = result.concat(returnNumeral(number));
   remainder -= number;
 }
 return result;
}

function closestNumeralWithoutGoingOver(val){
  var numerals = [1,4,5,9,10,40,50,90,100,400,500,900,1000];
  var number = 0;
  for(var i=0;i<numerals.length;i++){
    if (numerals[i]<= val){
      number = numerals[i];
    }
    else {break;} 
  }
  return number;
}


function returnNumeral(num){
  var ohtheromanity = {
   1:    "I",
   4:    "IV",
   5:    "V",   
   9:    "IX",
   10:   "X",
   40:   "XL",
   50:   "L", 
   90:   "XC",
   100:  "C",   
   400:  "CD", 
   500:  "D", 
   900:  "CM", 
   1000: "M"
   };
  return ohtheromanity[num];