function validate(theForm)
{
  if (theForm.name.value == "")
  {
    alert('Please enter your full name.');
    theForm.name.focus();
    return false;
  }

  if (theForm.name.value.length < 3)
  {
    alert("Please enter a valid full name.");
    theForm.name.focus();
    return false;
  }

  if (theForm.country.value == "")
  {
    alert("Please enter your country.");
    theForm.country.focus();
    return (false);
  }

  if (theForm.country.value.length < 3)
  {
    alert("Please enter a valid country.");
    theForm.country.focus();
    return (false);
  }

  if (theForm.email.value == "")
  {
    alert("Please enter a value for the \"E-mail\" field.");
    theForm.email.focus();
    return (false);
  }

  if (theForm.email.value.length < 3)
  {
    alert("Please enter a valid email address.");
    theForm.email.focus();
    return (false);
  }

//email validation
var emailPat=/^(.+)@(.+)$/
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
var validChars="\[^\\s" + specialChars + "\]"
var quotedUser="(\"[^\"]*\")"
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
var atom=validChars + '+'
var word="(" + atom + "|" + quotedUser + ")"
// The following pattern describes the structure of the user
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
var matchArray=theForm.email.value.match(emailPat)
if (matchArray==null) {
	alert("Email address seems incorrect (check @ and .'s)");
        theForm.email.focus();
	return false;
}
var user=matchArray[1]
var domain=matchArray[2]
// See if "user" is valid 
if (user.match(userPat)==null) {
    // user is not valid
    alert("The username doesn't seem to be valid.");
    theForm.email.focus();
    return false;
}
var IPArray=domain.match(ipDomainPat)
if (IPArray!=null) {
    // this is an IP address
	  for (var i=1;i<=4;i++) {
	    if (IPArray[i]>255) {
	        alert("Destination IP address is invalid!");
                theForm.email.focus();
		return false;
	    }
    }
    return true
}
// Domain is symbolic name
var domainArray=domain.match(domainPat)
if (domainArray==null) {
	alert("The domain name doesn't seem to be valid.");
        theForm.email.focus();
        return false;
}
var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
if (domArr[domArr.length-1].length<2 || 
    domArr[domArr.length-1].length>3) {
   // the address must end in a two letter or three letter word.
   alert("The address must end in a three-letter domain, or two letter country.");
   theForm.email.focus();
   return false;
}
// Make sure there's a host name preceding the domain.
if (len<2) {
   var errStr="This address is missing a hostname!"
   alert(errStr);
   theForm.email.focus();
   return false;
}

  return (true);
}