function hilite(field) 
{
 if (document.all)
 {
  document.my_form.elements[field].style.backgroundColor="BACFE9";
 }
}
function testData()
{
 if (document.my_form.elements['contact_face'].value=="")
 {
  alert ("\nPlease enter contact person!\t\n")
  hilite ('contact_face');
  document.my_form.elements['contact_face'].focus();
  return false;      
 }
 if (document.my_form.elements['E_mail'].value=="")
 {
  alert ("\nIs not entered E-mail of the contact person!\t\n")
  hilite ('E_mail');
  document.my_form.elements['E_mail'].focus();
  return false;      
 }
 if (document.my_form.elements['mail_message'].value=="")
 {
  alert ("\nA text message is not entered!\t\n")
  hilite ('mail_message');
  document.my_form.elements['mail_message'].focus();
  return false;      
 }   
}