function emailValidator(elem, helperMsg){
		var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
		if(elem.value.match(emailExp)){
			return true;
		}else{
			alert(helperMsg);
			elem.value = "";
			elem.focus();
			return false;
		}
	}

	function checkData() {
		if (document.newslettterFrm.email.value == "" || document.newslettterFrm.email.value == "Enter your email address") { 
			alert("Please enter the required field: Email Address"); 
			document.newslettterFrm.email.focus();
			return false;
		}
		if(!emailValidator(document.newslettterFrm.email, "Please enter correct Email Address")) { return false; }
		document.newslettterFrm.submit();
	}