function validate() {
	
	
	if(document.newsletter.emailid.value == "News Letter Sign Up") {

		alert("Enter the Email Id");
		document.newsletter.emailid.focus();
		document.newsletter.emailid.value = "";
		
		return false;
		
	} else if(document.newsletter.emailid.value == "") {
		
		alert("Enter the Email Id");
		document.newsletter.emailid.focus();
		return false;
	
	} 
	
	var validate_email = validateEmail(document.newsletter.emailid.value);
	
	if(validate_email == false) {
		
		alert("Enter the Valid Email Id");
		document.newsletter.emailid.focus();
		document.newsletter.emailid.value = "";
		return false;
	}
	
}


function validateEmail(elementValue){
	var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
	return emailPattern.test(elementValue);
}