/**
 * @author lamtran
 */
function validatePack(){
	try{
		new Validator('packId', {
			orientation: 'up',
			parent: 'div'
		})
		.isBlank('Please enter your entire tracking number, which starts with MGMC followed by 7 numbers, and click Go.')
		.startsWithFollowedByNumbersInRange('Please enter your entire tracking number, which starts with MGMC followed by 7 numbers, and click Go.',
		trackingPrefixes,
		$R(rangeStart,rangeEnd),
		'Please enter your entire tracking number, which starts with MGMC followed by 7 numbers, and click Go.')
		.clear();
		
		$('submitPackId').removeClassName('disabled');
		$('submitPackId').enable();
	}catch(e){
		/**$('submitPackId').addClassName('disabled');*/
		/**$('submitPackId').disable();*/
		$('submitPackId').removeClassName('disabled');
		$('submitPackId').enable();
	}
}