function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel") && a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) {
	      a.disabled = false;
	      cookieManager.setCookie("style", title, 365);
	      writeLink(title);
      }
    }
  }
}

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

var cookie = cookieManager.getCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);

function getStylesheetLink() {
  document.write('<p id="styleSwitch"></p>');
  writeLink(title);
}

function writeLink(title) {
  linkObj = document.getElementById('styleSwitch');
  if(linkObj) {
    if(title == "Kontrastansicht") {
      linkObj.innerHTML = '<strong>Kontrast:</strong> <a href="#" onclick="setActiveStyleSheet(\'Standardansicht\'); return false;">' +
          '<img width="16" height="16" title="Ansicht wechseln: standard Farben" alt="hellfarbige Ansicht" src="' + contextPath + '/wp-content/themes/default_de/img_rewirpower/btn/ansicht-hell.gif"/>' +
        '</a>';
     }
    else {
      linkObj.innerHTML = '<strong>Kontrast:</strong> <a href="#" onclick="setActiveStyleSheet(\'Kontrastansicht\'); return false;">' +
          '<img width="16" height="16" title="Ansicht wechslen: kontrastreich, blendarm" alt="dunkelfarbige Ansicht" src="' + contextPath + '/wp-content/themes/default_de/img_rewirpower/btn/ansicht-dunkel.gif"/>' +
        '</a>';
    }
  }
}