function readCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
  var c = ca[i];
  while (c.charAt(0)==' ') c = c.substring(1,c.length);
  if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
return null;
}

function thickBoxPopup(){
if((readCookie('wbsignup') > "3")  && (readCookie('wbsignup') != "lightbox")) {
tb_show("","http://www.winebuzz.hk/sign-up.php?KeepThis=true&TB_iframe=true&height=475&width=475",null);
}
}