/*
Author: Akio Taira (JUNK)
*/
dom.event.addEventListener(window, 'load', init);

function init(){
  var preloads = new Array();
  var images = document.getElementsByTagName("img");
  for(var i = 0; i < images.length; i++){
    if(images.item(i).className == 'hover'){
      var src = images.item(i).getAttribute('src');
      var ftype = src.substring(src.lastIndexOf('.'), src.length);
      var hoversrc = src.replace(ftype, '_on'+ftype);
      images.item(i).setAttribute('tempsrc', src);
      images.item(i).setAttribute('hoversrc', hoversrc);

      preloads[i] = new Image();
      preloads[i].src = hoversrc;


      dom.event.addEventListener(images.item(i), 'mouseover', hover);
      dom.event.addEventListener(images.item(i), 'mouseout', out);

    }
  }
}


function hover(evt){
  var target = dom.event.target(evt);
  target.setAttribute('src', target.getAttribute('hoversrc'));
}


function out(evt){
  var target = dom.event.target(evt);
  target.setAttribute('src', target.getAttribute('tempsrc'));
}