// function isNumberNoDecimal verifies that all digits/characters are numeric
// Call it like this
// if(!isNumberNoDecimal(prod.x.value)
	function isNumberNoDecimal(inputVal) {
		oneDash = false
		inputStr = inputVal.toString()
		if(inputStr.length == 0) { // return false if null string
			return false
		}
		for (var i = 0; i < inputStr.length; i++) {
			var oneChar = inputStr.charAt(i)
			if(oneChar < "0" || oneChar > "9") { // return false if any of the characters are
				return false					 // non-numeric
			}
		}
		return true // yes, it is a true number.
	} // END function isNumberNoDecimal(inputVal)