function CalculateROI()
{
  var users = eeparseFloat($('txtHandheldUsers').value);
      
  var hourlyRate = eeparseFloat($('txtHourValue').value);
  
  var hoursSaved = eeparseFloat($('txtEstimatedHours').value);

  $('MoneySaved').innerHTML = ((users * (hoursSaved) * 48) * hourlyRate).formatMoney(2, '.', ',');;
  
  $('HoursSaved').innerHTML = (users * (hoursSaved) * 48);
  
  new Effect.Appear($('Savings'), {duration:0.5, from:0, to:1.0});
}

var eedecreg=new RegExp("[.]","g");

Number.prototype.formatMoney = function(c, d, t){
var n = this, c = isNaN(c = Math.abs(c)) ? 2 : c, d = d == undefined ? "," : d, t = t == undefined ? "." : t, s = n < 0 ? "-" : "", i = parseInt(n = Math.abs(+n || 0).toFixed(c)) + "", j = (j = i.length) > 3 ? j % 3 : 0;
   return s + (j ? i.substr(0, j) + t : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + t) + (c ? d + Math.abs(n - i).toFixed(c).slice(2) : "");
 };


function eeparseFloat(str){
	str= String(str).replace(eedecreg,".");

	var res=parseFloat(str);

	if(isNaN(res)){
		return 0;
	}else{
		return res;
	}
}