var menu_open="";
function switchlayer(Layer_Name)
{
  var GECKO = document.getElementById? 1:0 ;
  var NS = document.layers? 1:0 ;
  var IE = document.all? 1:0 ;
  if(menu_open != "")
    {close(menu_open);}
  if (GECKO){
       {
    document.getElementById(Layer_Name).style.display=
       (document.getElementById(Layer_Name).style.display=='block') ? 'none' : 'block';}
      if(document.getElementById(Layer_Name).style.display=='block'){
          menu_open = Layer_Name;
          document.getElementById(Layer_Name+"_link").setAttribute("class", "level_1_active");
          document.getElementById(Layer_Name+"_link").setAttribute("className", "level_1_active"); 
        }
    }
  else if (NS){
       {document.layers[Layer_Name].display=(document.layers[Layer_Name].display==
       'block') ? 'none' : 'block';}
      if(document.layers[Layer_Name].display=='block'){
      menu_open = Layer_Name;
        document.layers[Layer_Name+"_link"].setAttribute("class", "level_1_active");
        document.layers[Layer_Name+"_link"].setAttribute("className", "level_1_active"); 
}
    }
  else if (IE){
       {document.all[Layer_Name].style.display=(document.all[Layer_Name].style.display==
       'block') ? 'none' : 'block';}
    if(document.all[Layer_Name].display=='block'){
      menu_open = Layer_Name;
        document.all[Layer_Name+"_link"].setAttribute("class", "level_1_active");
        document.all[Layer_Name+"_link"].setAttribute("className", "level_1_active"); 
}
    }
}

function switchlayer2(Layer_Name)
{
  var GECKO = document.getElementById? 1:0 ;
  var NS = document.layers? 1:0 ;
  var IE = document.all? 1:0 ;

  if (GECKO){
       {
    document.getElementById(Layer_Name).style.display=
       (document.getElementById(Layer_Name).style.display=='block') ? 'none' : 'block';}
    }
  else if (NS){
       {document.layers[Layer_Name].display=(document.layers[Layer_Name].display==
       'block') ? 'none' : 'block';}
         }
  else if (IE){
       {document.all[Layer_Name].style.display=(document.all[Layer_Name].style.display==
       'block') ? 'none' : 'block';}
       }
}



function close(layer){
  var GECKO = document.getElementById? 1:0 ;
  var NS = document.layers? 1:0 ;
  var IE = document.all? 1:0 ;
  if (GECKO){
   try{ document.getElementById(layer).style.display= 'none';} catch(e){}
    document.getElementById(layer+"_link").setAttribute("class", "");
    document.getElementById(layer+"_link").setAttribute("className", ""); 
}
  else if (NS)
       {
try{document.layers[layer].display='none' ;}catch(e){}
        document.layers[layer+"_link"].setAttribute("class", "");
        document.layers[layer+"_link"].setAttribute("className", ""); 
}      
  else if (IE)
       {
try{document.all[layer].style.display= 'none';}catch(e){}
        document.all[layer+"_link"].setAttribute("class", "");
        document.all[layer+"_link"].setAttribute("className", ""); 

}
}