<!-- //Begin 
function emailCheck (emailStr) {
    var emailPat=/^(.+)@(.+)$/
    var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
    var validChars="\[^\\s" + specialChars + "\]"
    var firstChars=validChars
    var quotedUser="(\"[^\"]*\")"
    var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
    var atom="(" + firstChars + validChars + "*" + ")"
    var word="(" + atom + "|" + quotedUser + ")"
    // The following pattern describes the structure of the user
    var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
    var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
    var matchArray=emailStr.match(emailPat)
    if (matchArray==null) {
            alert("The email address you entered is not valid, please verify.")
            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 email address you entered is not valid, please verify.")
        return false
    }
    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("The email address you entered is not valid, please verify.")
                return false
            }
        }
        return true
    }

    // Domain is symbolic name
    var domainArray=domain.match(domainPat)
    if (domainArray==null) {
            alert("The email address you entered is not valid, please verify.")
        return false
    }

    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("Your email address must end in a three-letter domain, or two letter country.")
       return false
    }

//    if (domArr[domArr.length-1].length==2 && len<3) {
//       var errStr="This address ends in two characters, which is a country"
//       errStr+=" code.  Country codes must be preceded by "
//       errStr+="a hostname and category (like com, co, pub, pu, etc.)"
//       alert(errStr)
//       return false
//    }

    if (domArr[domArr.length-1].length==3 && len<2) {
       var errStr="The email address you entered is not valid, please verify."
       alert(errStr)
       return false
    }
    // If we've gotten this far, everything's valid!
    return true;
}
//End -->