// JavaScript Document
function zt(aid){
if(aid==1){
document.getElementById("zt").src="http://images.dtcoalmine.com/templates/101248/elyy/2011sy42-q.gif";
document.getElementById("ztmore").href="http://www.dtcoalmine.com/101251/101300/";
}
if(aid==2){
document.getElementById("zt").src="http://images.dtcoalmine.com/templates/101248/elyy/2011sy42-1-q.gif";
document.getElementById("ztmore").href="http://www.dtcoalmine.com/101251/101494/list.html";
}
document.getElementById("zt1").style.display="none";
document.getElementById("zt2").style.display="none";
document.getElementById("zt"+aid).style.display="block";


}