function Validate(theForm)
{
  if (theForm.company.value == "")
  {
	 alert("Please enter a value for the \"Company\" field.");
	 theForm.company.focus();
	 return (false);
  }
  if (theForm.name.value == "")
  {
	 alert("Please enter a value for the \"Name\" field.");
	 theForm.name.focus();
	 return (false);
  }
  if (theForm.email.value == "" && theForm.phone.value == "")
  {
	 alert("Please enter either an email address or a phone number.");
	 theForm.email.focus();
	 return (false);
  }

// Script to validate the email address
/* The following pattern is used to check if the entered e-mail address
	fits the user@domain format.  It also is used to separate the username
	from the domain. */
var emailPat=/^(.+)@(.+)$/
/* The following string represents the pattern for matching all special
	characters.  We don't want to allow special characters in the address.
	These characters include ( ) < > @ , ; : \ " . [ ]	 */
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
/* The following string represents the range of characters allowed in a
	username or domainname.  It really states which chars aren't allowed. */
var validChars="\[^\\s" + specialChars + "\]"
/* The following pattern applies if the "user" is a quoted string (in
	which case, there are no rules about which characters are allowed
	and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
	is a legal e-mail address. */
var quotedUser="(\"[^\"]*\")"
/* The following pattern applies for domains that are IP addresses,
	rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
	e-mail address. NOTE: The square brackets are required. */
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
/* The following string represents an atom (basically a series of
	non-special characters.) */
var atom=validChars + '+'
/* The following string represents one word in the typical username.
	For example, in john.doe@somewhere.com, john and doe are words.
	Basically, a word is either an atom or quoted string. */
var word="(" + atom + "|" + quotedUser + ")"
// The following pattern describes the structure of the user
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
/* The following pattern describes the structure of a normal symbolic
	domain, as opposed to ipDomainPat, shown above. */
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")

/* Finally, let's start trying to figure out if the supplied address is
	valid. */
if (theForm.email.value != "") {
	/* Begin with the coarse pattern to simply break up user@domain into
		different pieces that are easy to analyze. */
	var matchArray=theForm.email.value.match(emailPat)
	if (matchArray==null) {
	  /* Too many/few @'s or something; basically, this address doesn't
		  even fit the general mould of a valid e-mail address. */
		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.")
		 return false
	}
	/* if the e-mail address is at an IP address (as opposed to a symbolic
		host name) make sure the IP address is valid. */
	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!")
			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.")
		 return false
	}
	/* domain name seems valid, but now make sure that it ends in a
		three-letter word (like com, edu, gov) or a two-letter word,
		representing country (uk, nl), and that there's a hostname preceding
		the domain or country. */
	/* Now we need to break up the domain to get a count of how many atoms
		it consists of. */
	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.")
		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)
		return false
	}
		return (true);
	}
}