// handles enter key pressed	
	function handleEnter (field, event) {
		var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
		if (keyCode == 13) {
			var i;
			for (i = 0; i < field.form.elements.length; i++)
				if (field == field.form.elements[i])
					break;
			i = (i + 1) % field.form.elements.length;
			field.form.elements[i].focus();
			return false;
		} 
		else
		return true;
	}      
	
	// the customer validator client validation function.
	function ControlTextLength(val, args)
	{
		if (document.getElementById(val.controltovalidate).value.length > document.getElementById(val.controltovalidate).MaxLength)
		{
			args.IsValid = false;
			return false;
		}
		else
		{
			args.IsValid = true;
			return true;
		}
	}
	
	// validate dropdown list
	function ValidDropDownList (source,arguments) {
		if (arguments.Value == "0")
			arguments.IsValid = false;
		else
			arguments.IsValid = true;
	}