//<![CDATA[
	<!-- Changes:  Sandeep V. Tamhankar (stamhankar@hotmail.com) -->

	/* 1.1.2: Fixed a bug where trailing . in e-mail address was passing
	            (the bug is actually in the weak regexp engine of the browser; I
	            simplified the regexps to make it work).
	   1.1.1: Removed restriction that countries must be preceded by a domain,
	            so abc@host.uk is now legal.  However, there's still the 
	            restriction that an address must end in a two or three letter
	            word.
	     1.1: Rewrote most of the function to conform more closely to RFC 822.
	     1.0: Original  */

	<!-- This script and many more are available free online at -->
	<!-- The JavaScript Source!! http://javascript.internet.com -->

	<!-- Begin
	function emailCheck(emailStr) {
		/* 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. */

		/* Begin with the coarse pattern to simply break up user@domain into
		   different pieces that are easy to analyze. */
		var matchArray = emailStr.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)");
			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;
		}

		// If we've gotten this far, everything's valid!
		return true;
		}
	//  End -->
//]]>