function validateEmail(){
	var contact = document.forms[0].contact.value;
	var phone = document.forms[0].phone.value;
	var email =document.forms[0].email.value;
	var comments = document.forms[0].comments.value;
	

	if(contact == ""){
		alert("Please enter your name.");
		return false;
	}
	else if(phone == "" || phone.length<10){
		alert("The phone number you've entered is not valid.");	
		return false;
	}
	
	else if(email == ""){
		alert("Please enter your email address.");
		return false;
	}
	else if(email.indexOf('@')== -1){
		alert("Your email is not valid.");
		return false;
	}
	
	else if(email.indexOf('.')==-1){
		alert("Your email is not valid.");
		return false;	
	}
	
	else if(!comments){
		alert("Please add your comments.");	
		return false;
	}
	else{
		return true;
	}
}