function showhidemore(id){
   if (document.getElementById(id).style.display == "none")
   {  document.getElementById(id + "_more").innerHTML = "[-]";
      document.getElementById(id).style.display = "block";
   }
   else
   {  document.getElementById(id + "_more").innerHTML = "[+]";
      document.getElementById(id).style.display = "none";
   }//end if-else
}//end function showhide