function gmt() {
var ex = new Date();
ex.setHours(ex.getHours() + 23);
gmt = ex.toGMTString();
return gmt;
}

function setCookie(key,value,exp) {
document.cookie = key + '=' + escape(value) + '; expires=' + exp + ';';
}

function getCookie() {
  var c = document.cookie;
  return c;
}