function getCookieVal (offset) { 
	var endstr = document.cookie.indexOf (";", offset); 
	if (endstr == -1) 
	endstr = document.cookie.length; 
	return unescape(document.cookie.substring(offset, endstr)); 
} 

function GetCookie (name) { 
	var arg = name + "="; 
	var alen = arg.length; 
	var clen = document.cookie.length; 
	var i = 0; 
	while (i < clen) { 
	 var j = i + alen; 
	 if (document.cookie.substring(i, j) == arg) 
	 return getCookieVal (j); 
	 i = document.cookie.indexOf(" ", i) + 1; 
	 if (i == 0) 
	 break; 
    } 
  return null; 
} 

function SetCookie (name, value) { 
	var argv = SetCookie.arguments; 
	var argc = SetCookie.arguments.length; 
	var expires = (argc > 2) ? argv[2] : null; 
	var path = (argc > 3) ? argv[3] : null; 
	var domain = (argc > 4) ? argv[4] : null; 
	var secure = (argc > 5) ? argv[5] : false; 
	document.cookie = name + "=" + escape (value) + 
	((expires == null) ? "" : ("; expires=" + 
	expires.toGMTString())) + 
	((path == null) ? "" : ("; path=" + path)) + 
	((domain == null) ? "" : ("; domain=" + domain)) + 
	((secure == true) ? "; secure" : ""); 
}