function getCookie(c_name) {
  if (document.cookie.length>0) {
    c_start=document.cookie.indexOf(c_name + "=");
    if (c_start!=-1) {
      c_start=c_start + c_name.length+1;
      c_end=document.cookie.indexOf(";",c_start);
      if (c_end==-1) {
        c_end=document.cookie.length;
      }
      return unescape(document.cookie.substring(c_start,c_end));
    }
  }
  return "";
}

function setCookie(c_name,value,expiredays) {
  var exdate=new Date();
  exdate.setDate(exdate.getDate()+expiredays);
  document.cookie=c_name+ "=" +escape(value)+((expiredays==null) ? "" :
    ";expires="+exdate.toGMTString())
}

function showMenu() {
  /*
  for (i=0; i<mn_items.length; i++) {
    if (document.getElementById(mn_items[i])) {
      document.getElementById(mn_items[i]).className='closed';
    }
  }
  */
  var value=getCookie('ccscms_open');
  if (value!=null && value!="") {
    if (document.getElementById(value)) {
      document.getElementById(value).style.display="block";
    }
    if (document.getElementById('mn_'+value)) {
      document.getElementById('mn_'+value).className='opened';
    }
  }
}

function swap(targetId) {
  if (document.getElementById(targetId)) {
    target = document.getElementById(targetId);
    var value=getCookie('ccscms_open');
    if (value!=null && value!="" && value!=targetId) {
      if (document.getElementById(value)) {
        document.getElementById(value).style.display="none";
        if (document.getElementById('mn_'+value)) {
          document.getElementById('mn_'+value).className='closed';
        }
      }
    }
    if (target.style.display == "none") { 
      target.style.display="block";
      setCookie('ccscms_open',targetId,2);
      if (document.getElementById('mn_'+targetId)) {
        document.getElementById('mn_'+targetId).className='opened';
      }
      return true;
    }
    else {
      target.style.display="none";
      setCookie('ccscms_open',"",2);
      if (document.getElementById('mn_'+targetId)) {
        document.getElementById('mn_'+targetId).className='closed';
      }
      return false;
    }
  }
}