function hideAll(){ 
tag = document.getElementsByTagName("span"); 
   for(x=0;x<tag.length; x++){ 
      if(tag[x].getAttribute('id').indexOf("toggle_") != -1){ 
         tag[x].style.display = "none"; 
      } 
   } 
} 

function show(id){ 
el = document.getElementById('toggle_' + id.value); 
      hideAll(); 
      el.style.display = "block"; 
}