//******************************************************************************
    //  Cookie Functions - Used to handle Cookies in DGC and GOK
    //  Author : MCA
    //******************************************************************************     

 
var CookieMngr = {

    //  Function to create or update a cookie.
    //    name - String object containing the cookie name.
    //    value - String object containing the cookie value.  May contain
    //         any valid string characters.
    //    [expires] - Date object containing the expiration data of the cookie.  If
    //         omitted or null, expires the cookie at the end of the current session.
    //    [path] - String object indicating the path for which the cookie is valid.
    //         If omitted or null, uses the path of the calling document.
    //    [domain] - String object indicating the domain for which the cookie is
    //         valid. If omitted or null, uses the domain of the calling document.
    //    [secure] - Boolean (true/false) value indicating whether cookie
    //         transmission requires a secure channel (HTTPS).  
    //
    //  The first two parameters are required.  The others, if supplied, must
    //  be passed in the order listed above.  To omit an unused optional field,
    //  use null as a place holder.  For example, to call SetCookie using name,
    //  value and path, you would code:
    //
    //      SetCookie ("myCookieName", "myCookieValue", null, "/");
    //
    //  Note that trailing omitted parameters do not require a placeholder.
    //
    //  To set a secure cookie for path "/myPath", that expires after the
    //  current session, you might code:
    //
    //      SetCookie (myCookieVar, cookieValueVar, null, "/myPath", null, true);
    //
 SetCookie: function (name,value,expires,path,domain,secure) {
      document.cookie = name + "=" + value +
        ((expires) ? "; expires=" + expires.toGMTString() : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
    },
 
  //  Function to return the value of the cookie specified by "name".
  //    name -    String object containing the cookie name.
  //    returns - String object containing the cookie value,
  //              or null if the cookie does not exist.
  //
  GetCookie: function (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 CookieMngr.getCookieVal (j);
    	i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0) break; 
      }
      return null;
    },
    
    //  Function to delete a cookie. (Sets expiration date to start of epoch)
    //    name -   String object containing the cookie name
    //    path -   String object containing the path of the cookie to delete.
    //             This MUST be the same as the path used to create the cookie, or
    //             null/omitted if no path was specified when creating the cookie.
    //    domain - String object containing the domain of the cookie to delete.
    //             This MUST be the same as the domain used to create the cookie, or
    //             null/omitted if no domain was specified when creating the cookie.
    //
    DeleteCookie: function (name,path,domain) {
      if (GetCookie(name)) {
        document.cookie = name + "=" +
          ((path) ? "; path=" + path : "") +
          ((domain) ? "; domain=" + domain : "") +
          "; expires=Thu, 01-Jan-70 00:00:01 GMT";
      }
    },
    
	getCookieVal: function (offset) {
	    var endstr=document.cookie.indexOf (";", offset);
	    if (endstr==-1)
	    endstr=document.cookie.length;
	    return unescape(document.cookie.substring(offset, endstr));
	}
    
};