function RegExTest(element,expression)
{
	return element.match(expression) != null;
}

function isDecimal(element)
{
	var decimalRE = "^[0-9][0-9]*(\\.[0-9]*)?$";
	return RegExTest(element,decimalRE);
}

function isInt(element)
{
	var integer = "^[0-9][0-9]?$";
	return RegExTest(element,integer);

}

function isNonNegDecimal(element)
{
	var nonnegdecimalRE = "^[0-9][0-9]*(\\.[0-9]*)?$";
	return RegExTest(element,nonnegdecimalRE);
}