/* -- Dutch Image JavaScript Library */		

/*--------------------------------------------------------------------------------
set Cookie
----------------------------------------------------------------------------------
name - name of the cookie
value - value of the cookie

[expires] - expiration date of the cookie
  (defaults to end of current session)
  
[path] - path for which the cookie is valid
  (defaults to path of calling document)
  
[domain] - domain for which the cookie is valid
  (defaults to domain of calling document)
  
[secure] - Boolean value indicating if the cookie transmission requires
  a secure transmission
  
* an argument defaults when it is assigned null as a placeholder
* a null placeholder is not required for trailing omitted arguments
--------------------------------------------------------------------------------*/
function setCookie(name, value, expires, path, domain, secure) {
  var curCookie = name + "=" + escape(value) +
	  ((expires) ? "; expires=" + expires.toGMTString() : "") +
	  ((path) ? "; path=" + path : "") +
	  ((domain) ? "; domain=" + domain : "") +
	  ((secure) ? "; secure" : "");
  document.cookie = curCookie;
}


/*--------------------------------------------------------------------------------
get Cookie
----------------------------------------------------------------------------------
name - name of the desired cookie return string containing value of specified
cookie or null if cookie does not exist
--------------------------------------------------------------------------------*/
function getCookie(name) {
  var dc = document.cookie;
  var prefix = name + "=";
  var begin = dc.indexOf("; " + prefix);
  
  if (begin == -1) {
	begin = dc.indexOf(prefix);
	if (begin != 0) return null;
	
  } else
	begin += 2;
  var end = document.cookie.indexOf(";", begin);
  if (end == -1)
	end = dc.length;
  return unescape(dc.substring(begin + prefix.length, end));
}


/*--------------------------------------------------------------------------------
delete Cookie
----------------------------------------------------------------------------------
name - name of the cookie
[path] - path of the cookie (must be same as path used to create cookie)
[domain] - domain of the cookie (must be same as domain used to create cookie) path
and domain default if assigned null or omitted if no explicit argument proceeds
--------------------------------------------------------------------------------*/
function deleteCookie(name, path, domain) {
  if (getCookie(name)) {
	document.cookie = name + "=" + 
		((path) ? "; path=" + path : "") + 
		((domain) ? "; domain=" + domain : "") + 
		"; expires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}


/*--------------------------------------------------------------------------------
één of andere functie voor Navigator op de mac .. ach .. ;)
--------------------------------------------------------------------------------*/
// date - any instance of the Date object
// * hand all instances of the Date object to this function for "repairs"

function fixDate(date) {
  var base = new Date(0);
  var skew = base.getTime();
  if (skew > 0)
	date.setTime(date.getTime() - skew);
}