var subs_array = new Array("sub1");�@�@// Put the id's of your hidden divs in this array
function displaySubs(the_sub){
	if (document.getElementById(the_sub).style.display==""){
	document.getElementById(the_sub).style.display = "none";return
  }
  for (i=0;i<subs_array.length;i++){
	var my_sub = document.getElementById(subs_array[i]);
	my_sub.style.display = "none";
	}
  document.getElementById(the_sub).style.display = "";
  }