var layerref="null",styleref="null",visiblevar="null";
var isonlayer1=0, flg1 = 1, isvisible=0, init_ok=0;
var totalTableWidth=764, window_width;

var IE = document.all?true:false;


window.onresize = resize;


function img(name,flag) { 

    eval("document.image_"+name+".src='image_"+name+"_"+flag+".gif'"); 
}

  function init()
  {

    if (!IE)
    {
      layerref="document.layers"; visvar="show"; styleref="";
      flg1=1;
    }
    else
    {
      layerref="document.all"; visvar="visible"; styleref=".style";
    }
    countMenuCoords();
    init_ok = 1;
  }
  function switchmenu(param)
  {
    img('2', 'na');
    flg1 = 1;
    if (eval(layerref+'["menubox"]'+styleref+'.visibility == visvar'))
    {
      hidemenu(); isonlayer1=0; 
    }
    else
    {
      showmenu(param);
    }

  }

  function showmenu(param)
  {
   if(flg1 != 0 && layerref != "null") 
   {
    if (param == 0 && isonlayer1 != 1)
    {
      isonlayer1=0;
    }
   
    if(param == 1) { isonlayer1=1; }

    eval(layerref+'["menubox"]'+styleref+'.visibility="visible"');
    isvisible = 1;
   }
  }

  function hidemenu()
  {
   if(flg1 != 0 && layerref != "null")
   { 
    eval(layerref+'["menubox"]'+styleref+'.visibility="hidden"');
    isvisible=0;
   }
  }
  function hide()
  {
    if(IE) hidemenu();
  }

  function resize()
  {
    flg1 = 1; hidemenu();
    countMenuCoords();
  }

  function countMenuCoords()
  {
    var sumwith;
    getWindowWidth();
    if(window_width < 764)
    {  window_width=764; }
    if(!IE)
    {
      document.layers["menubox"].top = document.layers.menubox.top-10;
      document.layers["menubox"].left =  (window_width - totalTableWidth)/2+455;
    }
    else
    {
      document.all["menubox"].style.width = 140;
      document.all["menubox"].style.left =  (window_width - totalTableWidth)/2+465;
    }
  }

  function getWindowWidth()
  {
    if (!IE){ window_width = window.innerWidth;}
    else { window_width = document.body.clientWidth;}
  }