/*
 * ÌáʾËÑË÷¹Ø¼ü×Ö
 */

var key_word;

function _category(key){
	key_word = key;
	show(key);
}

function hide_category(){
  var len = 0;
  len = document.getElementById("_cate_list").getElementsByTagName('a').length;
  for(i=0;i<len;i++){
	document.getElementById("_cate_list").getElementsByTagName('a')[i].className=''; 
  }
	document.getElementById("category_"+key_word).style.visibility = "hidden";
}


function show(key){
  var len = 0;
  len = document.getElementById("_cate_list").getElementsByTagName('a').length;
  for(var i=0;i<len;i++){
	document.getElementById("_cate_list").getElementsByTagName('a')[i].className=''; 
  }
  var len1 = 0;
  len1 = document.getElementById("cate_list_box").getElementsByTagName('div').length;
  for(var j=0;j<len1;j++){
	document.getElementById("cate_list_box").getElementsByTagName('div')[j].style.visibility='hidden'; 
  }
	document.getElementById("category_"+key).style.visibility = "visible";
	document.getElementById("_cate"+key).className = "on";

}