function clearSearchBox() {

    if (this.value == this.defaultText)
        this.value = "";
    else if (this.value == "")
        this.value = this.defaultText;
}

function initSearchBox(textBoxId, defaultText) {

    var searchTextbox = document.getElementById(textBoxId);
    if (searchTextbox != null) {
        searchTextbox.onclick = clearSearchBox;
        searchTextbox.onblur = clearSearchBox;
        searchTextbox.defaultText = defaultText;
        searchTextbox.value = defaultText;
    }
}