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" : "");
}
function DeleteCookie () { 
var exp = new Date();
exp.setTime (exp.getTime() - 1000000000);  // This cookie is history
var cval = GetCookie ('zorkgame');
document.cookie ='zorkgame' + "=" + cval + "; expires=" + exp.toGMTString();    
}
function cookieCreater () {
if(GetCookie('zorkgame') == null) {
var expdate = new Date (); 
expdate.setTime(expdate.getTime() + (24 * 60 * 60 * 1000)); 
SetCookie('zorkgame', zorkgame_Page, expdate);  
   }
}