<!-- Original:  Ronnie T. Moore -->
<!-- Web Site:  The JavaScript Source -->

<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->

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);  
  var cval = GetCookie (name);  

  document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}