// test quantity form field

function isValidNumber(form){
	if (isEmpty(form.itemQuantity.value)){
			alert("Please enter a number into the quantity field")
			form.itemQuantity.focus()
			return false
	}
	else if(!isInteger(form.itemQuantity.value)){
			alert("Please enter a whole number into the quantity field")
			form.itemQuantity.focus()
			form.itemQuantity.select()
			return false
	}
	else {
		return true
	}
}

// initiate form validation
 
function checkItem(form){
	if (isValidNumber(form)){
		form.submit()
	}
}