function NumericValidation() {
	//this will only allow numeric values to be entered in a field
	var k = window.event.keyCode;
	return (((k >= 48) && (k <= 57)) || (k == 8) || (k == 9) || (k == 16) || (k == 46));
	//return (((k >= 48) && (k <= 57)) || k == 8 || k == 9 || k == 16 || k == 32 || k == 46 );
}