String.prototype.trim = function() {
  a = this.replace(/^\s+/, '');
  return a.replace(/\s+$/, '');
};

function writeEmail(contact, email, emailHost) {
  document.write("<a href=" + "&#109a&#105l" + "&#116&#111:" + email + "@" + emailHost+ ">" + contact + "@" + emailHost+"</a>");
}

function clearText(thefield){
if (thefield.defaultValue==thefield.value)
thefield.value = ""
}