/**
 * Script from http://www.w3schools.com/JS/js_cookies.asp
 */

function setCookie(sName, mValue, iExpirity, sPath)
{
  var exdate=new Date();
  exdate.setDate(exdate.getDate()+iExpirity);
  document.cookie=sCookie=sName+ "=" +escape(mValue)+
  ((iExpirity==null||iExpirity==false) ? "" : "; expires="+exdate.toGMTString())+
  ((sPath==null) ? "" : "; path=" + escape(sPath));
}

function getCookie(sName)
{
  if (document.cookie.length <= 0)
    return "";
  
  c_start=document.cookie.indexOf(sName + "=");
  
  if (c_start!=-1)
  { 
    c_start=c_start + sName.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));
  }
}