function dd(id){
if(document.getElementById){
	if(document.getElementById(id).style.display == "block"){
		document.getElementById(id).style.display = "none";
      }else{
        document.getElementById("o0").style.display = "none";
        document.getElementById("o1").style.display = "none";
        document.getElementById("o2").style.display = "none";
	document.getElementById("o3").style.display = "none";
	document.getElementById("o4").style.display = "none";
	document.getElementById("o5").style.display = "none";
	document.getElementById("o6").style.display = "none";
	document.getElementById("o7").style.display = "none";
	document.getElementById("o8").style.display = "none"
        document.getElementById(id).style.display = "block";
      }
    }
  }