function toggleList() {
    var divObj = this["div"];
    if (divObj != null && divObj.className != null) {
        divObj.className = (divObj.className == "open") ? "closed" : "open";
    }
}

function initToggle(objID, divID) {
    var obj = document.getElementById(objID);
    var divObj = document.getElementById(divID);
    obj["div"] = divObj;

    obj.onclick = toggleList;        
}