function checkDate( frm, field_name, msg ) {

        var strTemp = new String();
        strTemp = eval( "frm." + field_name + ".value" );
        strTemp = trim( strTemp );

        if (strTemp.length < 1) {
            alert( msg );
            eval( "frm." + field_name + ".focus()" );
            return false;
        }
        return true;
    }

    function checkText( frm, field_name, msg ) {

        var strTemp = new String();
        strTemp = eval( "frm." + field_name + ".value" );
        strTemp = trim( strTemp );

        if (strTemp.length < 1) {
            alert( msg );
            eval( "frm." + field_name + ".focus()" );
            return false;
        }
        return true;
    }

    function checkTextsMatch( frm, field_name1, field_name2, msg ) {

        var strTemp1 = new String();
        var strTemp2 = new String();
        strTemp1 = eval( "frm." + field_name1 + ".value" );
        strTemp2 = eval( "frm." + field_name2 + ".value" );
        strTemp1 = trim( strTemp1 );
        strTemp2 = trim( strTemp2 );

        if (strTemp1 != strTemp2) {
            alert( msg );
            eval( "frm." + field_name1 + ".focus()" );
            return false;
        }
        return true;
    }

    function checkKeywords( frm, field_name, msg ) {

        var strTemp = new String();
        strTemp = eval( "frm." + field_name + ".value" );
        strTemp = trim( strTemp );

        if (strTemp.length < 1) {
            alert( msg );
            eval( "frm." + field_name + ".focus()" );
            return false;
        }
        return true;
    }

    function checkPosInt( frm, field_name, msg ) {

        var strTemp = new String();
        strTemp = eval( "frm." + field_name + ".value" );

        if (strTemp == 0) {
            alert( msg );
            eval( "frm." + field_name + ".focus()" );
            return false;
        }
        return true;
    }

    function checkAtLeastOneSelected( frm ) {
        var checkCount = 0;

        for (i = 0; i < frm.elements.length; i++) {
            if (frm.elements[i].type == "checkbox") {
                var checked = frm.elements[i].checked;

                if (checked) checkCount = checkCount + 1;
            }
        }

        if (checkCount == 0) {
            alert( "Select at least one category" );
            return (false);
        }
        return true;
    }

function emailCheck(emailStr) {
    var checkTLD = 1;

    /* The following is the list of known TLDs that an e-mail address must end with. */

    var knownDomsPat = /^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;

    /* The following pattern is used to check if the entered e-mail address
    fits the user@domain format.  It also is used to separate the username
    from the domain. */

    var emailPat = /^(.+)@(.+)$/;

    /* The following string represents the pattern for matching all special
    characters.  We don't want to allow special characters in the address.
    These characters are ( ) < > @ , ; : \ " . [ ] */

    var specialChars = "\\(\\)><@,;:\\\\\\\"\\.\\[\\]";

    /* The following string represents the range of characters allowed in a
    username or domainname.  It really states which chars aren't allowed.*/

    var validChars = "\[^\\s" + specialChars + "\]";

    /* The following pattern applies if the "user" is a quoted string (in
    which case, there are no rules about which characters are allowed
    and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
    is a legal e-mail address. */

    var quotedUser = "(\"[^\"]*\")";

    /* The following pattern applies for domains that are IP addresses,
    rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
    e-mail address. NOTE: The square brackets are required. */

    var ipDomainPat = /^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;

    /* The following string represents an atom (basically a series of non-special characters.) */

    var atom = validChars + '+';

    /* The following string represents one word in the typical username.
    For example, in john.doe@somewhere.com, john and doe are words.
    Basically, a word is either an atom or quoted string. */

    var word = "(" + atom + "|" + quotedUser + ")";

    // The following pattern describes the structure of the user

    var userPat = new RegExp("^" + word + "(\\." + word + ")*$");

    /* The following pattern describes the structure of a normal symbolic
    domain, as opposed to ipDomainPat, shown above. */

    var domainPat = new RegExp("^" + atom + "(\\." + atom + ")*$");

    /* Finally, let's start trying to figure out if the supplied address is valid. */

    /* Begin with the coarse pattern to simply break up user@domain into
    different pieces that are easy to analyze. */

    var matchArray = emailStr.match(emailPat);

    if (matchArray == null) {

        /* Too many/few @'s or something; basically, this address doesn't
        even fit the general mould of a valid e-mail address. */

        alert("EMail address seems incorrect (check @ and .'s)");

        return false;
    }

    var user = matchArray[1];
    var domain = matchArray[2];

    // Start by checking that only basic ASCII characters are in the strings (0-127).

    for (i = 0; i < user.length; i++) {
        if (user.charCodeAt(i) > 64 && user.charCodeAt(i) < 91) {
            alert("Ths EMail Id should contain small case letters only");

            return false;
        }
    }

    for (i = 0; i < user.length; i++) {
        if ((user.charCodeAt(i) < 97 || user.charCodeAt(i) > 122) && (user.charCodeAt(i) != 95) && (user.charCodeAt(i) != 46) && (user.charCodeAt(i) < 48 || user.charCodeAt(i) > 57)) {
            alert("Ths username contains special characters.");

            return false;
        }
    }

    for (i = 0; i < domain.length; i++) {
        if (domain.charCodeAt(i) > 127) {
            alert("Ths domain name contains special characters.");

            return false;
        }
    }

    // See if "user" is valid

    if (user.match(userPat) == null) {

        // user is not valid

        alert("The username doesn't seem to be valid.");

        return false;
    }

    /* if the e-mail address is at an IP address (as opposed to a symbolic
    host name) make sure the IP address is valid. */

    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("Destination IP address is invalid!");

                return false;
            }
        }

        return true;
    }

    // Domain is symbolic name.  Check if it's valid.

    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 does not seem to be valid.");

            return false;
            }
        }

    /* domain name seems valid, but now make sure that it ends in a
    known top-level domain (like com, edu, gov) or a two-letter word,
    representing country (uk, nl), and that there's a hostname preceding
    the domain or country. */

    if (checkTLD && domArr[domArr.length - 1].length != 2 && domArr[domArr.length - 1].search(knownDomsPat) == -1)
        {
        alert("The address must end in a well-known domain or two letter " + "country.");

        return false;
        }

    // Make sure there's a host name preceding the domain.

    if (len < 2)
        {
        alert("This address is missing a hostname!");

        return false;
        }

    // If we've gotten this far, everything's valid!
    return true;
    }

function validateLogin()
    {
    var strTemp = new String();

    strTemp = trim(document.form1.email.value);

    if (strTemp.length < 1)
        {
        alert("Enter EMail.");

        document.form1.txtuserid.focus();
        return (false);
        }

    strTemp = trim(document.form1.password.value);

    if (strTemp.length < 1)
        {
        alert("Enter Password.");

        document.form1.password.focus();
        return (false);
        }

    strTemp = trim(document.form1.email.value);

    if (strTemp.length > 1)
        {
        if (!(emailCheck(document.form1.email.value)))
            {
            document.form1.email.focus();

            return (false);
            }
        }

    return (true);
    }