// JavaScript Document
	function valid()
		{
       var email=document.subscribe.email
        
					
					if((email.value==null)||(email.value==""))
							{   alert("Please enter your email address .");
							email.focus()
							return false;
							}            else {  
												  var le= email.value.length;
												  var email=email.value;
												  
													
													var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
													if(reg.test(email) == false) {
																	 
																			 alert("Please enter valid email");
																			 return false;					  							
																			 } 
																	 
											
												  }
			}