function turnOn (a) {
  a.style.display="inline";
}
function turnOff (a) {
  a.style.display="none";
}

function visibility (a,state) {
   var element = document.getElementById(a);
   var show_control = document.getElementById(a + "_show");
   var hide_control = document.getElementById(a + "_hide");
   if (state == "on") {
      turnOn(element);
      turnOff(show_control);
      turnOn(hide_control);
   } else if (state == "off"){
      turnOff(element);
      turnOff(hide_control);
      turnOn(show_control);
   }
   setVisState(a,state);
   return false;
}


function startPage() {
 var spans=document.getElementsByTagName("div");
 for (var i=0; i < spans.length; i++){
    if (spans[i].className=="ctl_hidden" || spans[i].className=="el_hidden" ) {
           spans[i].style.display = "none";
    }
 }
}