JavaScript基础问题

这里有个table表格排序加分页的源码,排序是先正序然后倒序,我想改成先倒序再正序,JavaScript菜鸟不知怎么改,请大侠帮忙啊
把主要代码放在这里:

JScript code:
<script type="text/javascript">
var sorter = new TINY.table.sorter("sorter");
sorter.head = "head";
sorter.asc = "asc";
sorter.desc = "desc";
sorter.even = "evenrow";
sorter.odd = "oddrow";
sorter.evensel = "evenselected";
sorter.oddsel = "oddselected";
sorter.paginate = true;
sorter.currentid = "currentpage";
sorter.limitid = "pagelimit";
sorter.init("table",1);
</script>


JScript code:
var TINY={};

function T$(i){return document.getElementById(i)}
function T$$(e,p){return p.getElementsByTagName(e)}

TINY.table=function(){
function sorter(n){this.n=n; this.pagesize=20; this.paginate=0}
sorter.prototype.init=function(e,f){
var t=ge(e), i=0; this.e=e; this.l=t.r.length; t.a=[];
t.h=T$$('thead',T$(e))[0].rows[0]; t.w=t.h.cells.length;
for(i;i<t.w;i++){
var c=t.h.cells[i];
if(c.className!='nosort'){