历史频道：南北战争，内容概述：=null){document.getElementById("Images_1").innerHTML=document.getElementById("PicYuLan").innerHTML;document.getElementById("PicYuLan").style.display="none";document.getElementById("Images_3").style.display="block";}function show_briefpic(){var objImages1=document.getElementById("Images_1");if(objImages1.style.display==""){objImages1.style.display="none";objImages1.innerHTML=document.getElementById("PicYuLan").innerHTML;}else{objIma...