var maxInterest = 12;
function isInteger(val)
{
	var digits="1234567890";
	for (var i = 0;i < val.length;i++) 
	{
		if (digits.indexOf(val.charAt(i))==-1) { return false; }
	}
	return true;
}
function checkROR(frm)
{
	var fieldNames = new Array('afttax','rateret','growth','RateOfReturn','interestrate','Interestrate','GrowthRateClient','GrowthRateSpouse','Interest'); 
	var field = null;
	var val = null;
	for(var i = 0;i < fieldNames.length;i++)
	{
		field = frm.elements[fieldNames[i]];
		if(field != null)
		{
			val = field.value;
			if(!isInteger(val)) return false;
			val = parseInt(val);
			if(val > maxInterest)
				field.value = maxInterest;
		}
	}
}