window.addEvent( 'domready', function() {
    if( $('cl_loginForm') ){
        $('cl_loginForm').addEvent( 'submit', function( event ){
            var md5_hash = calcMD5(calcMD5($('cl_password').value)+$('cl_ott').value);
            $('cl_md5hash').value = md5_hash;
            $('cl_password').value = '';
        } );
    }
});