
<!--
/************************************************************************************
*This file contains various validation functions to test Email box from a form for
*correct input.
************************************************************************************/

//-----------------------------------functions--------------------------------------
 
function doupper(obj) 
{ 
obj.value=(((obj.value.substr(0,1)).toUpperCase())+obj.value.substr(1,obj.value.length)) 
} 

/*************************************isValidEmail ()**************************************
*this tests for an Email string
*pre: the string to be tested
*post: Returns true if the given string is not valid.
*************************************************************************************/

function isValidEmail (s) { 
	emailObj=s.t1;
	emailStr = s;
	if(emailStr == "") 
	{ 
	    alert ( "Please fill in the 'Email Address' box." ); 
	    return false; 
	} 
	var checkTLD=0; 
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/; 
	var emailPat=/^(.+)@(.+)$/; 
	var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]"; 
	var validChars="\[^\\s" + specialChars + "\]"; 
	var quotedUser="(\"[^\"]*\")"; 
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/; 
	var atom=validChars + '+'; 
	var word="(" + atom + "|" + quotedUser + ")"; 
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$"); 
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$"); 
	var matchArray=emailStr.match(emailPat); 
	if (matchArray==null) { 
		alert("The Email Address Is Invalid"); 
		return false; 
	} 
	var user=matchArray[1]; 
	var domain=matchArray[2]; 
	for (i=0; i<user.length; i++) { 
		if (user.charCodeAt(i)>127) { 
			alert("The Username Contains Invalid Characters."); 
		return false; 
		} 
	} 
	for (i=0; i<domain.length; i++) { 
		if (domain.charCodeAt(i)>127) { 
			alert("This Domain Name Contains Invalid Characters."); 
		return false; 
		} 
	} 
	if (user.match(userPat)==null) { 
		alert("The Username Is Invalid."); 
	return false; 
	} 
	var IPArray=domain.match(ipDomainPat); 
	if (IPArray!=null) { 
		for (var i=1;i<=4;i++) { 
			if (IPArray[i]>255) { 
				alert("The Destination IP Address Is Invalid."); 
	return false; 
	} 
	} 
	return true; 
	} 
	var atomPat=new RegExp("^" + atom + "$"); 
	var domArr=domain.split("."); 
	var len=domArr.length; 
	for (i=0;i<len;i++) { 
		if (domArr[i].search(atomPat)==-1) { 
			alert("The Domain Name Is Invalid."); 
	return false; 
	} 
	} 
	if (checkTLD && domArr[domArr.length-1].length!=2 && 
		domArr[domArr.length-1].search(knownDomsPat)==-1) { 
		alert("The Domain Name Extension Is Invalid"); 
	return false; 
	} 
	if (len<2) { 
		alert("The Address Is Missing A Hostname."); 
	return false; 
	} 
	return true;
} 
var SUB_YET=0; /* this keeps it from ever submitting after the first time*/

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