全选删除特效

<script language="JavaScript">
<!--
function CheckAll(chk) {
for (var i=0;i<chk.length;i++) chk[i].checked=true;
}
//-->
</script>

<input type="button" value="全" onclick="CheckAll(form.selAnnounce)"><input type='submit' value='删'>
````````````````这个是checkbox的name

补充：asp教程,高级应用