var utils = {

    restoreSelectBoxSelection: function(id_select_box, selected_value)
    {
        select_box = $(id_select_box);
        if (!select_box) {
            return;
        }

        for (i = 0; i < select_box.options.length; i++) {
            if (select_box.options[i].value == selected_value) {
                select_box.selectedIndex = i;
            }
        }
    },

    clearSelectBoxOptions: function(id_select_box)
    {
        select_box = $(id_select_box);
        while (select_box.childNodes.length > 0) {
            select_box.removeChild(select_box.firstChild);
        }
    }
}