function validate(form) {
  if (form.name.value == ""){
	alert("Name is required");
	form.name.focus();
	form.name.select();
	return false;
  }
  else if (isEmail(form.email.value) == false) {
        alert("Please enter a valid email address.");
        form.email.focus();
		form.email.select();
        return false;
    }
  else if (form.phone.value == ""){
	alert("phone is required");
	form.phone.focus();
	form.phone.select();
	return false;
  }
  else if (form.suggestions.value == ""){
	alert("Your comments are required");
	form.suggestions.focus();
	form.suggestions.select();
	return false;
  }
  else {
	 return true;
  }
}
function isEmail(string) {
    if (string.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
        return true;
    else
        return false;
}