function getCookieVal(offset) {
  endstr = document.cookie.indexOf (";", offset)
  if(endstr == -1) endstr = document.cookie.length
  return unescape(document.cookie.substring(offset, endstr))
}

function GetCookie(name) {
  arg = name + "="
  alen = arg.length
  clen = document.cookie.length
  var i = 0
  while (i < clen) {
    j = i + alen
    if(document.cookie.substring(i, j) == arg) return getCookieVal(j)
    i = document.cookie.indexOf(" ", i) + 1
    if(i == 0) break
  }
  return null
}

function SetCookie (name, value, per, exp) {
  cstr = name + "=" + escape(value) + ";"
  if(per){
    addtime=(exp>0) ? exp : 31536000000
    expdate = new Date()
    expdate.setTime(expdate.getTime() + addtime)
    expdate = expdate.toGMTString()
   cstr+=" expires=" + expdate
  }
  document.cookie = cstr
}

function DeleteCookie(name) {
  exp = new Date()
  exp.setTime (exp.getTime() - 1)
  cval = GetCookie(name)
  if(cval != null)
  document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString()
}



function setDisplay(div,disp)
{
  if (disp!=null)
   div.style.display=disp;
}

function expandCollapse(id)
{
  var data=id.split(':');
  var div = document.getElementById(data[0]);
  if (div.style.display=='none')
  {
    div.style.display='block';
    SetCookie(id,'block');
  }
  else
  {
    div.style.display='none';
    SetCookie(id,'none');
  }
  
  return false;
}

function setState(pageID)
{
  var div;
  var i=1;
  while (div=document.getElementById('Div'+(i++)))
   setDisplay(div,GetCookie(div.id+':'+pageID));
}