function $(curObj){
    return document.getElementById(curObj);
}
function mt_effect(DivID, ulID) {
    function $(curObj) {
        return document.getElementById(curObj);
    }
    DivID = $(DivID);
    ulID = $(ulID);      
    ulID.style.visibility = 'visible'; 	
    function dark() {       
        ulID.style.visibility = 'hidden';
    }
    DivID.onmouseout = dark;
}