function toggle(myId) {

  var myElement = $(myId);
  var myHeader = myElement.previousSibling;
  if (myHeader.childNodes.length == 0) myHeader = myHeader.previousSibling;
  var myImg = myHeader.getElementsByTagName('IMG')[0];

  if (myElement.style.display == 'none') {
    myElement.style.display = 'block';
    myImg.src = '../projects/inc/icons/down_arrow.png'; // WARNING: too much DOM
    setCookie(myId,1,5);
  } else {
    myElement.style.display = 'none';
    myImg.src = '../projects/inc/icons/right_arrow.png'; // WARNING: too much DOM
    setCookie(myId,0,5);
  }

}

function $(myId) {
	return document.getElementById(myId);
}

function setCookie(c_name,value,expiredays) {
	var exdate=new Date();
	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie=c_name+ "=" +escape(value)+
	((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function cookiesTurnedOn() {
	document.cookie = "cookies=true";
	var has_cookies = (document.cookie) ? "true" : "false";
	return has_cookies;
}