function ValidateContact() {
 var FieldList = "";
 var validRegExp;
 var strEmail;

 if (document.getElementById("name").value == "") {
    FieldList = "&nbsp;&bull;&nbsp;Name<br />";
 }

 if (document.getElementById("email").value == "") {
    FieldList = FieldList + "&nbsp;&bull;&nbsp;E-mail<br />";
 }

 validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;
 strEmail = document.getElementById("email").value;

 if (document.getElementById("email").value != "") {
  if (strEmail.search(validRegExp) == -1) {
    FieldList = FieldList + "&nbsp;&bull;&nbsp;Invalid E-mail<br />";
  }
 }

 if (FieldList == "") {
   return( true );
 } else {
   document.getElementById("error_msg").innerHTML = "Please complete next fields:<br />" + FieldList;
   return( false );
 }        
}