function SwitchMenu(obj){
        if(document.getElementById){
        var el = document.getElementById(obj);


                if(el.style.visibility != "visible"){

                        el.style.visibility = "visible";
                }else{
                        el.style.visibility = "hidden";
                }
                el = document.getElementById("closer");
                el.style.visibility = "visible";
                el = document.getElementById("closer_top");
                el.style.visibility = "visible";
        }
    }


    function switchText(){
        if(document.getElementById){
        var el1 = document.getElementById("text1");
        var el2 = document.getElementById("text2");


                if(el1.style.visibility != "visible"){
                        el1.style.visibility = "visible";
                        el2.style.visibility = "hidden";
                }else{
                        el2.style.visibility = "visible";
                        el1.style.visibility = "hidden";
                }
        }
    }

    function hideMenus(obj){
        if(document.getElementById){
        var el = document.getElementById(obj);

  layerName = "";
  for(i = 1; i <= 100; i++) {
  
  layerName = "menu" + i;
  if (document.getElementById(layerName)) {
  document.getElementById(layerName).style.visibility ="hidden";
  }
  document.getElementById('closer').style.visibility ="hidden";
  document.getElementById('closer_top').style.visibility ="hidden";
  }

        }
    }