<!-- //
// _CheckEmail.js
function check_email(e) {
 ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";

 for(i=0; i < e.length ;i++){
  if(ok.indexOf(e.charAt(i))<0){ 
   return (false);
  }	
 } 

 if (document.images) {
  re = /(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;
  re_two = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
   if (!e.match(re) && e.match(re_two)) {
    return (-1);		
   } 
 }
}
// call it with this 
// <SCRIPT LANGUAGE="JavaScript" SRC="_CheckEmail.js" TYPE="text/javascript"></SCRIPT> 
// -->