function initSearchForm(tf_id, button_id, str, fromObj) {
    var v = $(tf_id);
    if ($.trim(v.val()) == "") {
        v.one("focus", function() {
            v.val("");
        });
        v.val(str);
    }
    $(button_id).click(function(e) {            
        if ($.trim(v.val()) == "" || v.val() == str) {
            alert(str);
            v.focus();
        } else {
            fromObj.submit();
        }
    });
}