/*********************************************************
* danro[at]hack[dot]org  2002-11-21
* Cookie functions
/*********************************************************

/*********************************************************
* This function creates/overwrites a cookie on the client
* if no date is set it is a sessio cookie.
**********************************************************/
function setCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

/*********************************************************
* This function retrievs a cookie from the client
**********************************************************/
function getCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

/*********************************************************
* This function toggles a cookie value 1/0
**********************************************************/
function toggleCookie(cName, days){
	var i = getCookie(cName);
	if(isNaN(i)){
		i = 0;
	}else if(parseInt(i) > 0){
		i = 0;
	}else i = 1;
	
	if(days){
		setCookie(cName, i, days);
	}else setCookie(cName, i);
}