function changeVisibility(id) {
	var div = document.getElementById(id);
	if(div.style.display == "none") {
		div.style.display = "block";
		return;
	}
	if(div.style.display == "block") {
		div.style.display = "none";
		return;
	}
}

function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function hideDivider(id) {
	prev_id = id - 1;
	if (document.getElementById('divider_'+id)) document.getElementById('divider_'+id).style.visibility = 'hidden';
	if (document.getElementById('divider_'+prev_id)) document.getElementById('divider_'+prev_id).style.visibility = 'hidden';
}
function showDivider(id) {
	prev_id = id - 1;
	if (document.getElementById('divider_'+id)) document.getElementById('divider_'+id).style.visibility = 'visible';
	if (document.getElementById('divider_'+prev_id)) document.getElementById('divider_'+prev_id).style.visibility = 'visible';
}