// JavaScript Document
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 checkCookie(cookieName)
{
cookieVal=getCookie(cookieName)
if (cookieVal!=null && cookieVal!="")
  {
  return cookieVal;
  }
else 
  {
  cookieVal=parseURL(cookieName);
  if (cookieVal!=null && cookieVal!="")
    {
    setCookie(cookieName,cookieVal,365);
    }
  }
}

function destroyCookie(cookieName)
{
setCookie(cookieName,'',-1);
}