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 getCookieVal (offset) {

   var endstr = document.cookie.indexOf (";", offset);

   if (endstr == -1)

      endstr = document.cookie.length;

   return unescape(document.cookie.substring(offset, endstr));

}

 // ---------------------------------------------------------------
 
// this deletes the cookie when called
function Delete_Cookie( name, path, domain ) {
if ( GetCookie( name ) ) document.cookie = name + "=" +
( ( path ) ? ";path=" + path : "") +
( ( domain ) ? ";domain=" + domain : "" ) +
";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}