function mnu(mn){
//var bak = document.all[mn];
var bak = document.getElementById(mn);
if(bak.style.visibility == "hidden" || bak.style.visibility == ''){
bak.style.visibility = "visible";
}}
function kapat() {
var menu_sayisi=4;
var i=1;
var mn = new Array();
mn[1]="m1";
mn[2]="m2";
mn[3]="m3";
mn[4]="m4";
//mn[5]="m5";
while(menu_sayisi>=i){
var bak = document.getElementById(mn[i]);
//var bak = document.all[mn[i]];
if(bak.style.visibility == "visible"){
bak.style.visibility = "hidden";
}
i++;
}}
function out(){
kapat();
//setTimeout(kapat(), 5000);
}