/*
This file retrieved from the JS-Examples archives
http://www.js-examples.com
1000s of free ready to use scripts, tutorials, forums.
Author: JS-Examples - http://www.js-examples.com/ 
*/
function doupper(obj) 
{ 
obj.value=(((obj.value.substr(0,1)).toUpperCase())+obj.value.substr(1,obj.value.length)) 
} 

function emailCheck (_form) { 
emailObj=_form.email;
emailStr = emailObj.value; 
if(emailStr == "") 
{ 
    alert ( "Please fill in the 'email' 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("Please check your email address "); 
return false; 
} 
} 
if (checkTLD && domArr[domArr.length-1].length!=2 && 
domArr[domArr.length-1].search(knownDomsPat)==-1) { 
alert("Please check your e-mail address"); 
return false; 
} 
if (len<2) { 
alert("The email address is missing a hostname."); 
return false; 
} 
} 
var SUB_YET=0; /* this keeps it from ever submitting after the first time*/