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// Example:
 
// writeCookie("myCookie", "my name", 24);
 
// Stores the string "my name" in the cookie "myCookie" which expires after 24 hours.
 
function writeCookie(name, value, hours)
 
{
 
  var expire = "";
 
  if(hours != null)
 
  {
 
    expire = new Date((new Date()).getTime() + hours * 3600000);
 
    expire = "; expires=" + expire.toGMTString();
 
  }
 
  document.cookie = name + "=" + escape(value) + expire;
 
}