function hideall()
      {
        for(i=0; i<=4; i++) hide(i,true); // 5
        return;
      }
      function hide(menunumber,force)
      {
        if(!force)
        {
          if(mymenu_status[menunumber]==true)
          {
            window.setTimeout("hide("+menunumber+",false);",1000)
            return;
          }
        }
        mymenu_status[menunumber]=false;
        mymenu_left[menunumber]=false;
        activemenu=0;
        if (document.layers) 
        {
          document["menu"+menunumber].visibility="hide";
          parent.navi.document.images["img_menu"+menunumber].src="pictures/menu"+menunumber+".gif";
        }
        else if (document.all) 
        {
          document.all["menu"+menunumber].style.visibility="hidden";
          parent.navi.document.images["img_menu"+menunumber].src="pictures/menu"+menunumber+".gif";
        }
        else if (document.getElementById) 
        {
          document.getElementById("menu"+menunumber).style.visibility="hidden";
          eval("parent.navi.document.getElementById(\"img_menu"+menunumber+"\").src=\"pictures/menu"+menunumber+".gif\";");
        }
        parent.navi.mouseover(menunumber,0);
        return;
      }
      var activemenu=0;
      function show(menunumber)
      {
        hideall();
        mymenu_status[menunumber]=true;
        mymenu_left[menunumber]=false;
        if (document.layers) 
        {
          document["menu"+menunumber].top = window.pageYOffset;
          document["menu"+menunumber].visibility="show";
        }
        else if (document.all) 
        {
          document.all["menu"+menunumber].style.pixelTop = document.body.scrollTop;
          document.all["menu"+menunumber].style.visibility="visible";
        }
        else if (document.getElementById) 
        {
          document.getElementById("menu"+menunumber).style.top = window.pageYOffset + 'px';
          document.getElementById("menu"+menunumber).style.visibility="visible";
        }
//        if(activemenu!=0) hide(activemenu,true);
        activemenu=menunumber;
        window.setTimeout("hide("+menunumber+",false);",500);
        return;
      }