function set_menu()
{
timer=window.setInterval("menu_control()",200);
}

var openflag=0;
var mtimer=0;

function menu_control()
{
 if(mtimer!=-1)
 {
  if(mtimer>0)
  {
  mtimer--;
  if(mtimer==0)closeall();
  }
 }
}

function closeall()
{
for(n=1; n<4; n++)
{
eval("menu"+n+".style.visibility='hidden'");
}
openflag=0;
}


function openlink(num)
{
if(num!=openflag)
{
closeall()
openflag=num;
eval("menu"+num+".style.visibility='visible'");
}
mtimer=-1;
}

function mout()
{
mtimer=2;
}

function load1()
{
set_menu();
}

//onload
try {
  window.addEventListener("load", load1, false);
} catch(e) {
  window.onload = load1;
}