/**
 * This contains the javascript error checking code used on the NTAF site. This was not written by me.
 * It's pretty poorly written and doesn't follow coding standards.
 */
<!-- Original:  Nannette Thacker -->
<!-- http://www.shiningstar.net -->
function checkNumeric(objName,minval, maxval,comma,period,hyphen)
{
	var comma = '';
	var period = '.';
	var hyphen = '';
	var numberfield = objName;
	if (chkNumeric(objName,minval,maxval,comma,period,hyphen) == false)
	{
		numberfield.select();
		numberfield.focus();
		return false;
	}
	else
	{
		return true;
	}
}

function chkNumeric(objName,minval,maxval,comma,period,hyphen)
{
	// only allow 0-9 be entered, plus any values passed
	// (can be in any order, and don't have to be comma, period, or hyphen)
	// if all numbers allow commas, periods, hyphens or whatever,
	// just hard code it here and take out the passed parameters
	var checkOK = "0123456789" + comma + period + hyphen;
	var checkStr = objName;
	var allValid = true;
	var decPoints = 0;
	var allNum = "";
	
	for (i = 0;  i < checkStr.value.length;  i++)
	{
		ch = checkStr.value.charAt(i);
		for (j = 0;  j < checkOK.length;  j++)
			if (ch == checkOK.charAt(j))
				break;
				
		if (j == checkOK.length)
		{
			allValid = false;
			break;
		}

		if (ch != ",")
			allNum += ch;
	}

	if (!allValid)
	{
		alert("Enter only numeric values, no commas please.");
		return (false);
	}

	// set the minimum and maximum
	var chkVal = allNum;
	var prsVal = parseInt(allNum);
	if (chkVal != "" && !(prsVal >= minval && prsVal <= maxval))
	{
		alertsay = "Please enter a value greater than or "
		alertsay = alertsay + "equal to \"" + minval + "\" and less than or "
		alertsay = alertsay + "equal to \"" + maxval + "\" in the \"" + checkStr.name + "\" field."
		alert(alertsay);
		return (false);
	}
}