function check() {
    if (document.form1.Actual_comment.value == "") {
      alert('Please provide a comment, query or request via the text box');
      return false;
    }
    if (document.form1.realname.value == "") {
      alert('Please provide a contact name');
      return false;
    }

    if (document.form1["email"].value == "" && document.form1.telephone.value == "") {
      alert('Please provide either an email or a contact telephone number');
      return false;
    }
   var re=/\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/i;
   if (document.form1["email"].value != "" && !re.test(document.form1["email"].value)) {
       alert("Please provide a valid email address");
       return false;
   }
   // alert('OK'); return false;
    return true;
}