function SW_menushow(n)
{
 var topmenuObj= document.getElementById("topmenu"+n);
 var menuObj= document.getElementById("menu"+n);
 topmenuObj.style.zIndex= 10;
 menuObj.style.visibility='visible';
}

function SW_menuhide(n)
{
 var topmenuObj= document.getElementById("topmenu"+n);
 var menuObj= document.getElementById("menu"+n);
 topmenuObj.style.zIndex= 0;
 menuObj.style.visibility='hidden';
}