function showTab(name,num,id){
  for(i=1;i<(num+1);i++){
    document.getElementById(name+"t"+i).className="tag_title1";
    document.getElementById(name+i).style.display="none";
  }
  document.getElementById(name+"t"+id).className="tag_title";
  document.getElementById(name+id).style.display="block";
}


function ContentSize(size)
	{
 	var obj=document.all.article;
 	obj.style.fontSize=size+"px";
	}