var mn = 0; //menu number
var mouse = 0; // mouse timer
var cm = 0; // already opened menu

function menu(mn) {
mn = document.getElementById(mn);

if (cm)
cm.style.display='none';

if (mn) {
mn.style.display='block';
cm = mn;
}
clearTimeout(mouse);

}
function trig() {
clearTimeout(mouse);
// stop hide timer
}
function away(){
clearTimeout(mouse);
mouse = setTimeout("menu(0);",2000);
// if mouse out, clear menu after 2 sec
}