d=document;
function GetCookie(name){
  arg=name+"=";
  alen=arg.length;
  clen=d.cookie.length;
  i=0;
  while(i<clen){
    j=i+alen;
    if(d.cookie.substring(i,j)==arg)
    {endstr=d.cookie.indexOf(";",j);
 	if(endstr==-1)
		 endstr=d.cookie.length;
	return unescape(d.cookie.substring(j,endstr));
    }
    i=d.cookie.indexOf(" ", i)+1;
    if(i==0)break;
  }
  	return null;
}
function setCookie(name,value){
   if(value !=null && value !="")
     d.cookie=name+"="+escape(value)+"; expires=Mon, 01-Jan-2018 00:00:00 GMT";
}