function simple_tree(elm){
 var no_block=elm.parentNode.getElementsByTagName("ul")[0];
 if (no_block.style.display == "block") no_block.style.display="none";
 else {
  var tn=no_block.parentNode.parentNode.getElementsByTagName("ul");
  for (var i=0; i < tn.length; i++)
   if (tn[i].className == "no_block") tn[i].style.display="none";
  no_block.style.display="block";
 }
}

if (document.getElementById)
 document.write('<style type="text/css"> .no_block { display: none; } ul.side_navigation_in li.category a.title{ color:#474747;line-height:36px;margin:0 0 0 6px;_margin:3px 0 0 4px;_height:33px;_line-height:33px;display:block; } ul.side_navigation_in li a{color:#474747;} ul.side_navigation_in li.category ul{background-image:url(/ja/biz/common/images/navi_on_back.gif);background-repeat:no-repeat;background-position:4px 0px;_background-position:1px 1px;}<'+'/style>');

try {
document.execCommand('BackgroundImageCache', false, true);
} catch(e) {}