function display(num1){
 document.getElementById('k'+num1).className="over";
 document.getElementById('w'+num1).style.display="";
 for(var i=1;i<=10;i++){
 if(i!=num1){
 if(document.getElementById('k'+i)!=null&&document.getElementById('w'+i)!=null){
 document.getElementById('k'+i).className="off";
 document.getElementById('w'+i).style.display="none";
 }
 }
 }
}