function roundNumber(num, dec) {
	var result = Math.round(num*Math.pow(10,dec))/Math.pow(10,dec);
	return result;
}
function calculateBudget()
{
    var nights = parseInt(document.getElementById(objName_Nights).value);
    var travelers = parseInt(document.getElementById(objName_Travelers).value);
    var castles = parseInt(document.getElementById(objName_Castles).value);
    var castleEst = 500;
    var manors = parseInt(document.getElementById(objName_Manors).value);
    var manorEst = 250;
    var bbs = parseInt(document.getElementById(objName_BBs).value);
    var bbEst = 110;
    var chauffeurEst = 600;
  
    var totalPkg = (castles * castleEst) + (manors + manorEst) + (bbs * bbEst) + (nights * chauffeurEst);
    var minBudget = roundNumber(totalPkg / travelers,0);
    if (isNaN(minBudget))
        document.getElementById(objName_MinPrice).value = "";
    else
        document.getElementById(objName_MinPrice).value = minBudget;
    return true;
}