//Javascript Document 

function toggle(obj1,obj2){  

  var more=document.getElementById(obj1);  
  var less=document.getElementById(obj2);

  if(!more)return true;  

  if(more.style.display=="none"){  
    more.style.display="block";
    less.style.display="none";
  } else {  
    more.style.display="none";
    less.style.display="block";
  }return true;  

}