$.fn.focusNextInputField = function() {
        return this.each(function() {
            var fields = $(this).parents('form:eq(0),body').find('button,input,textarea,select,password');
            var index = fields.index( this );
            if ( index > -1 && ( index + 1 ) < fields.length ) {
                fields.eq( index + 1 ).focus();
            }
            return false;
        });
    };