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 (name) { var exp = new Date(); exp.setTime 
      (exp.getTime() - 1); // This cookie is history var cval = GetCookie (name); 
      document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString(); 
      }