function createCookie(name,value,days) 
{
   var date    = new Date();

   date.setTime(date.getTime()+(days*24*60*60*1000));

	document.cookie = name + 
	                  "=" + 
	                  value + 
	                  (days ? "; expires="+date.toGMTString() : "") + 
	                  "; path=/";
}                                      // function createCookie(name,value,days)

function readCookie(name)
{
	var nameEQ = name + "=";
	var cookieArray = document.cookie.split(';');
	var currentCookie;
	var result  = null;

	for(var cookieNumber=0; cookieNumber < cookieArray.length; cookieNumber++) 
	{
		currentCookie = cookieArray[cookieNumber];
		currentCookieLength = currentCookie.length;
		
		while (currentCookie.charAt(0) == ' ') 
		{
		   currentCookie = currentCookie.substring(1, currentCookieLength);
		}
		
		if (currentCookie.indexOf(nameEQ) == 0) 
		{
		   result = currentCookie.substring(nameEQ.length,currentCookieLength);
		}
	}

	return (result);
}                                      // function readCookie(name)

function eraseCookie(name)
{
	createCookie(name,"",-1);
}                                      // function eraseCookie(name)