/* Adapted from JavaScript scripts available from http://techpatterns.com/downloads/javascript_cookies.php */

function Set_Cookie(name, value, expires, path, domain, secure) {
   // set time, it's in milliseconds
   var today = new Date();
   today.setTime(today.getTime());
   /**
    * if the expires variable is set, make the correct expires time.
	* The script below will set it for x number of minutes
	*/
	if (expires) {
	   expires = expires * 1000 * 60;
	}
	var expires_date = new Date(today.getTime() + (expires));
	document.cookie = name + "=" +escape(value) +
	   ((expires) ? ";expires=" + expires_date.toGMTString() : "") +
	   ((path) ? ";path=" + path : "") +
	   ((domain) ? ";domain=" + domain : "") +
	   ((secure) ? ";secure" : "");
}

// this function gets the cookie, if it exists
function Get_Cookie(name) {
   var start = document.cookie.indexOf(name + "=");
   var len = start + name.length + 1;
   if ((!start) && (name != document.cookie.substring(0, name.length))) {
	  return null;
   }
   if (start == -1) {
	  return null;
   }
   var end = document.cookie.indexOf(";", len);
   if (end == -1) {
	  end = document.cookie.length;
   }
   return unescape(document.cookie.substring(len, end));
}

function Delete_Cookie(name, path, domain) {
   if (Get_Cookie(name)) {
	  document.cookie = name + "=" + ((path) ? ";path=" + path : "") + ((domain) ? ";domain=" + domain : "") + ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
   }
}

function checkCookies() {
   Set_Cookie('test', 'none', '', '/', '', '');
   document.writeln('<h1>Cookie Settings<\/h1>');
   if (! Get_Cookie('test')) {
	  document.writeln('<p>Cookies are disabled.<\/p><p>See the article <a href="./cookies.shtml">Enabling Cookies<\/a> for instructions on how to change your browser\'s settings for cookies.</p>');
	  Delete_Cookie('test', '/', '');
   }
   else {
	  document.writeln('<p>Cookies are enabled.<\/p>');
   }
}