// Shows/hides a filter in web-administrator
function showFilter(filter_id) {
  if (document.getElementById(filter_id).style.display == "none") {
    document.getElementById(filter_id).style.display = "block";
    setCookie(filter_id, 'block');
    document.getElementById(filter_id+"_b_open").style.display = "none";
    document.getElementById(filter_id+"_b_close").style.display = "inline";
  } else {
    document.getElementById(filter_id).style.display = "none";
    setCookie(filter_id, 'none');
    document.getElementById(filter_id+"_b_open").style.display = "inline";
    document.getElementById(filter_id+"_b_close").style.display = "none";
  }
}

// Set a cookie value
function setCookie(name, value) {
  expDate = new Date();
  expDate.setYear(expDate.getYear() + 1);
  document.cookie = name+"="+escape(value)+";expires=\"expDate.toGMTString()+\";"
}

// Return value of cookie
function getCookie(name) {
  var prefix = name + "="
  var cookieStartIndex = document.cookie.indexOf(prefix)
  if (cookieStartIndex == -1)
    return null
  var cookieEndIndex = document.cookie.indexOf(";", cookieStartIndex + prefix.length)
  if (cookieEndIndex == -1)
    cookieEndIndex = document.cookie.length
  return unescape(document.cookie.substring(cookieStartIndex + prefix.length, cookieEndIndex))
}
function showSubmenu(id)
{
document.getElementById("deafener1").style.display = "none";
document.getElementById("resonator1").style.display = "none";
document.getElementById("pipe1").style.display = "none";
document.getElementById(id+"1").style.display = "block";

document.getElementById("deafener").style.color='#333333';
document.getElementById("resonator").style.color='#333333';
document.getElementById("pipe").style.color='#333333';
document.getElementById(id).style.color='#D41B23';

document.getElementById("deafener").style.fontWeight='normal';
document.getElementById("resonator").style.fontWeight='normal';
document.getElementById("pipe").style.fontWeight='normal';
document.getElementById(id).style.fontWeight='bold';

setCookie('open_list_id', id+"1");
}

function show_selected_list(id)
{
if (!list_id) list_id = getCookie('open_list_id');
document.getElementById(id).style.display = "block";
var id1=id;
if (id=="deafener1") id1='deafener';
else if (id=="resonator1") id1='resonator';
else if (id=="pipe1") id1='pipe';
document.getElementById(id1).style.color='#D41B23';
document.getElementById(id1).style.fontWeight='bold';
}