function selectTag(showContent,selfObj,id){
  selectProductTag(showContent,selfObj,id);
  if(id==0)
  {
  	changTop("index_ranking_goods_0_o");
  }
  else if(id==1)
  {
  	changTop("index_ranking_book_0_o");
  }
  else if(id==2)
  {
  	changTop("index_ranking_magazine_0_o");
  }
  else if(id==3)
  {
  	changTop("index_ranking_film_0_o");
  }
  else if(id==4)
  {
  	changTop("index_ranking_music_0_o");
  }    
}

function selectProductTag(showContent,selfObj,id){
	// ²Ù×÷±êÇ©
	var tag = document.getElementById("tags").getElementsByTagName("li");
	var taglength = tag.length;
	for(i=0; i<taglength; i++){
		tag[i].className = "moreny";
	}
	selfObj.parentNode.className = "morenx";
	// ²Ù×÷ÄÚÈÝ

	for(i=0; j=document.getElementById("tagContent"+i); i++){

		j.style.display = "none";
	
	}
	document.getElementById(showContent).style.display = "block";

}