<SCRIPT>
function fnSwap(){
oList.children(0).swapNode(oList.children(1));
}
</SCRIPT>
<UL ID = oList>
<LI>List Item 1
<LI>List Item 2
<LI>List Item 3
<LI>List Item 4
</UL>
<INPUT TYPE = button VALUE = "Swap List" onclick = "fnSwap()">
你试一下swapNode吧,具体做法你看看msdn吧!·