// $Id$

if (isJsEnabled()) {
  addLoadEvent(fontSizeAutoAttach);
}

function fontSizeAutoAttach(event, parent) {
  // Attach to relevant links.
  smallLink = $('font-size-small');
  mediumLink = $('font-size-medium');
  largeLink = $('font-size-large');

  smallLink.onclick = function(e) { setActiveStyleSheet('small'); }
  mediumLink.onclick = function(e) { setActiveStyleSheet('medium'); }
  largeLink.onclick = function(e) { setActiveStyleSheet('large'); }

  setActiveStyleSheet('medium');
}

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 getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  return ('medium');
}