var artEventHelper = {
  'bind' : function (obj, evt, fn) {
    if (obj.addEventListener)
      obj.addEventListener(evt, fn, false);
    else if (obj.attachEvent)
      obj.attachEvent('on' + evt, fn);
    else
      obj['on' + evt] = fn;
  }
};

var artLoadEvent = {
  list: [],
  init: function() {
    if (arguments.callee.done) return;
    arguments.callee.done = true;
    for (var i = 0; i < artLoadEvent.list.length; i++) { artLoadEvent.list[i](); }
  },
  add: function(f) {
    artLoadEvent.list.push(f);
  },
  bindInit: function() {
    if (document.addEventListener) {
      document.addEventListener("DOMContentLoaded", artLoadEvent.init, false);
    }
    /*@cc_on @*/
    /*@if (@_win32)
    document.write('<script id="__ie_onload" defer="defer" src="javascript:void(0)"><\/script>');
    var script = document.getElementById("__ie_onload");
    script.onreadystatechange = function() {
      if (this.readyState == "complete") {
       artLoadEvent.init();
      }
    };
    /*@end @*/
    if (/WebKit/i.test(navigator.userAgent)) {
      var _timer = setInterval(function() {
        if (/loaded|complete/.test(document.readyState)) {
          clearInterval(_timer);
          artLoadEvent.init();
        }
      }, 10);
    }
    artEventHelper.bind(window, 'load', artLoadEvent.init);
  }
};
artLoadEvent.bindInit();


(function () {
  // fix ie blinking
  var m = document.uniqueID && document.compatMode && !window.XMLHttpRequest && document.execCommand;
  try{ if(!!m) { m("BackgroundImageCache", false, true); } }
  catch(oh){};
})();

function xGetElementsByClassName(clsName, parentEle, tagName) {
  var elements = null;
  var found = [];
  var slash = String.fromCharCode(92);
  var re = new RegExp(slash + "b" + clsName + slash + "b");
  if (!parentEle) parentEle = document;
  if (!tagName) tagName = '*';
  elements = parentEle.getElementsByTagName(tagName);
  if (elements) {
    for (var i = 0; i < elements.length; ++i) {
      if (elements[i].className.search(re) != -1) {
        found[found.length] = elements[i];
      }
    }
  }
  return found;
}

function artButtonSetupJsHover(btn)
{
  artEventHelper.bind(btn, 'mouseover', function() {
    var spans = btn.getElementsByTagName("span");
    if (spans.length > 0)
      spans[0].className += " hover";
  });
  artEventHelper.bind(btn, 'mouseout', function() {
    var spans = btn.getElementsByTagName("span");
    if (spans.length > 0)
      spans[0].className = spans[0].className.replace(/hover/, "");
  });
}

function artButtonsSetupJsHover() {
  var elements = xGetElementsByClassName("btn", document, "span");
  for (var i = 0; i < elements.length; i++) {
    if (!elements[i].tagName) continue;
    artButtonSetupJsHover(elements[i].parentNode);
  }
}

artLoadEvent.add(artButtonsSetupJsHover);