//<SCRIPT LANGUAGE=javascript>
<!--
function checkTextForNullValue(objFormElement, strErrorMsg, strClass, strClassError) {
	var rc;
		
	if (objFormElement.value == '') {
		objFormElement.className = strClassError;
		rc = strErrorMsg;
	} else {
		objFormElement.className = strClass;
		rc = '';
	}
	return rc;
}




function checkSelectForNullValue(objFormElement, strErrorMsg, strClass, strClassError) {
	var rc;
	
	if (objFormElement.options[objFormElement.selectedIndex].value == '') {
		objFormElement.className = strClassError;
		rc = strErrorMsg;
	} else {
		objFormElement.className = strClass;
		rc = '';
	}
	return rc;
}

function checkTextForNumericValue(objFormElement, strErrorMsg, strClass, strClassError) {
	var rc;
		
	if (! IsNumber(objFormElement.value)) {
		objFormElement.className = strClassError;
		rc = strErrorMsg;
	} else {
		objFormElement.className = strClass;
		rc = '';
	}
	return rc;
}

function checkTextForInterestRateValue(objFormElement, strClass, strClassError) {
	var rc;
		
	if (! IsNumber(objFormElement.value)) {
		objFormElement.className = strClassError;
		rc = '\n    Enter a numerical value for the\n    interest rate.';
	} else {
		if (parseInt(objFormElement.value) < .01 || parseInt(objFormElement.value) > 20) {
			objFormElement.className = strClassError;
			rc = '\n    Enter a positive value for the\n    interest rate below 20%.';
		} else {
			objFormElement.className = strClass;
			rc = '';
		}
	}
	return rc;
}


function checkTextForEmailAddr(objFormElement, strErrorMsg, strClass, strClassError) {
	var rc;
		
	if (!IsEmail(objFormElement.value)) {
		objFormElement.className = strClassError;
		rc = strErrorMsg;
	} else {
		objFormElement.className = strClass;
		rc = '';
	}
	return rc;
}

function IsNumber(Expression) {
	Expression = Expression.toLowerCase();
	RefString = "0123456789.-";

	if (Expression.length < 1) 
		return (false);

	for (var i = 0; i < Expression.length; i++) 
	{
		var ch = Expression.substr(i, 1)
		var a = RefString.indexOf(ch, 0)
		if (a == -1)
			return (false);
	}
	return(true);
}

function IsEmail(str)
	{
			var dot = str.indexOf(".");
			var at = str.indexOf("@");
		if (dot != -1 && at != -1) return true; else return false;
		
	}

//-->
//</SCRIPT>