cookie

Cookie.js

function setCookie(cname, cvalue, exdays) {
  var d = new Date();
  d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));
  var expires = "expires="+d.toUTCString();
  document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
}
function delCookie(cname)
{
    document.cookie = cname + "=delete; expires=Thu, 18 Dec 2000 12:00:00 UTC; path=/";
}
function getCookie(cname) 
{
  var name = cname + "=";
  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);
    }
    if (c.indexOf(name) == 0) 
    {
      return c.substring(name.length, c.length);
    }
  }
  return "";
}