function validateSearchBox(searchBoxId) {
    var searchBox = $(searchBoxId);
    return (jQuery.trim(searchBox.val()) != '') ? true : false;
}

function limitNumberOfEnteredCharacters(input, event, limit) {
    var isNotBackspace = event.keyCode != 9;
    var limitReached = $(input).val().length >= limit;
    if (isNotBackspace && limitReached) {
        input.value = input.value.substring(0, limit - 1);
    }
}