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.toUTCString());
}

function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  var c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
    {
    c_start=c_start + c_name.length+1;
    var 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 "";
}

//check if cookie exists
function checkCookie(c_name)
{
var mycookie=getCookie(c_name);
if (mycookie!=null && mycookie!="")
  {
  return true;
  }
else
  {
  return false;
  }
}

//turn facebook cookie into associative array
function getFacebookCookie(c_name)
{
    var queryAsAssoc = new Array();
    var str1 = getCookie(c_name);
    var str = str1.substring(1,str1.length-1);
    var keyValues = str.split(/\&/);
    for (var i in keyValues) {
        var key = keyValues[i].split(/\=/);
        queryAsAssoc[key[0]] = key[1];
        //alert(key[0] + '=' + key[1]);
    }
    
    return queryAsAssoc;
}