<script language="JavaScript">

function checkEmail(checkString)
{
 var newstr = "";
 var at = false;
 var dot = false;

 // DO SOME PRELIMINARY CHECKS ON THE DATA

 // IF EMAIL ADDRESS HAS A '@' CHARACTER
 if (checkString.indexOf("@") != -1) {
 at = true;

 // IF EMAIL ADDRESS HAS A '.' CHARACTER
 } else if (checkString.indexOf(".") != -1) {
 dot = true;
 }
 // PARSE REMAINDER OF STRING
 for (var i = 0; i < checkString.length; i++) {
 ch = checkString.substring(i, i + 1)
 if ((ch >= "A" && ch <= "Z") || (ch >= "a" && ch <= "z")
 || (ch == "@") || (ch == ".") || (ch == "_")
 || (ch == "-") || (ch >= "0" && ch <= "9")) {
 newstr += ch;
 if (ch == "@") {
 at=true;
 }
 if (ch == ".") {
 dot=true;
 }
 }
 }
 if ((at == true) && (dot == true)) {
 return newstr;
 }
 else {
 // DISPLAY ERROR MESSAGE
 alert ("Sorry, the email address you\nentered is not in the correct\nformat.");
 return checkString;
 }
}

// End -->
</script>


