光标是停在文本框文字的最后

<script language="javascript">
function cc()
{
var e = event.srcElement;
var r =e.createTextRange();
r.moveStart('character',e.value.length);
r.collapse(true);
r.select();
}
</script>
<input type=text name=text1 value="123" onfocus="cc()">

1判断上一页的来源
asp:
request.servervariables("HTTP_REFERER")

javascript:
document.referrer