$().ready(function(){
			$('ul.sf-menu').superfish(
			 {
			hoverClass:    'sfHover',       
			pathClass:     'current', 
			pathLevels:    0,                  
			delay:         0,               
			animation	: {opacity:'show'},
			speed:         0,        
			autoArrows:    false,               
			dropShadows:   false,               
			disableHI:     false              	   
			});
			
			$('#addmail').submit(function(){
				var email=$('input[name="txtEmail"]').val();
				
				if(email=="")
					{
						alert("Vui lòng nhập email");
						return false;
					}
				if(!isValidEmailAddress(email))
				{
						alert("Nhập đúng email");
						return false;
				}
				return true;
				});
			
	});

function isValidEmailAddress(emailAddress) {
var pattern = new RegExp(/^(("[\w-\s]+")|([\w-]+(?:\.[\w-]+)*)|("[\w-\s]+")([\w-]+(?:\.[\w-]+)*))(@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$)|(@\[?((25[0-5]\.|2[0-4][0-9]\.|1[0-9]{2}\.|[0-9]{1,2}\.))((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){2}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\]?$)/i);
return pattern.test(emailAddress);
}