不用后台代码实现，以下代码不行：
还有分数：http://topic.csdn.net/u/20090924/17/63bfaf86-676a-4b17-b5a8-c3639cb52d48.html?seed=1252542124&r=60046892#r_60046892
HTML code:
<script type="text/javascript">
function link() {
document.getElementById("pid").value="vcastr_file=http://www.ndnews.cn/spnd/UploadFiles_7567/vod/news/090603/宁德市总工会慰问六一节 农民工子女.flv";
}
</script>
HTML code:
<div id="player">
<script type="text/javascript">
swfUrl="#"
swftext="1030"
var swf_width=459
var swf_height=318
var texts=swftext
var files=swfUrl
document.write('<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cabversion=6,0,0,0" width="'+ swf_width +'" height="'+ swf_height +'">');
document.write('<param name="movie" value="http://www.ndnews.cn/vcastr22.swf"><param name="quality" value="high">');
document.write('<param name="menu" value="false"><param name="
如有一个textbox，用户输入后点button按钮时，实现用JavaScript对textbox输入信息的验证，要求用JavaScript来实现，比如验证用户输入的是否是数字。
希望将HTML代码一并写出来哈，谢谢
HTML code:
<!DOC ......
<script>
with(document)
{
for(var i=0;i <streams.length;i++)
writeln(" <p> <a href=# onclick=change(streams[i].url)>"+streams[i].name+" </a> < ......
