//check the ohms for a value
function valueCheck(elinput) {
	var complete=true;
	var elform=elinput.parentNode;
	for (var i=0; i<elform.length; i++)
		if (elform.elements[i].value == "")	{
			alert('Please select an option');
			complete=false;
			}
	if (complete) elform.submit();
	}

//check the numeric input
function rangeCheck(elinput,themax) {
	elinput.value=parseInt(elinput.value);
	if (isNaN(elinput.value) || elinput.value < 0 || elinput.value > themax) elinput.value=elinput.defaultValue;
	}