function validateForm(theForm)
{
        if ( Empty( document.getElementById("cname").value ))
        {  alert('Your name can not be left blank. Please fill in your name.');
           document.getElementById("cname").focus();
           return false;
        }

        if (!validEmail(document.getElementById("cemail"),"Email Address",true))
                return false;

        if (Empty(document.getElementById("ccomments").value ))
        {  alert('Please enter some comments to send to me.');
           document.getElementById("ccomments").focus();
           return false;
        }

        return true;
}

function isEmailAddr(email)
{
  var result = false;
  var theStr = new String(email);
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
        result = true;
  }
  return result;
}

function validRequired(formField,fieldLabel)
{
        var result = true;

        if (formField.value == "")
        {
                alert('Please enter a value for the "' + fieldLabel +'" field.');
                formField.focus();
                result = false;
        }

        return result;
}

function Empty(formvalue)
{
        var result = false;

        if (formvalue == "")
        { result = true; }

        return result;
}

function validEmail(formField,fieldLabel,required)
{
        var result = true;

        if (required && !validRequired(formField,fieldLabel))
                result = false;

        if (result && ((formField.value.length < 3) || !isEmailAddr(formField.value)) )
        {
                alert("Please enter a complete email address in the form: yourname@yourdomain.com");
                formField.focus();
                result = false;
        }

  return result;

}