function set_cookie(my_cookie,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 = my_cookie+"="+value+expires+"; path=/";
}

function read_cookie(my_cookie) {
 var my_cookie_eq = my_cookie + "=";
 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(my_cookie_eq) == 0) {
   return c.substring(my_cookie_eq.length,c.length);
  }
 }
 return null
}

function delete_cookie(my_cookie) {
 set_cookie(my_cookie,"",-1);
}

function setCookieStatus(cookiename) {
	
	if (read_cookie(cookiename) == 'true' || read_cookie(cookiename) == null) {
		set_cookie(cookiename, 'false', 9999);
	} else {
		set_cookie(cookiename, 'true', 9999);
	}
}