60秒倒计时的一个小JAVASCRIPT

<table name=agree border="0" cellpadding="10" cellspacing="0" align=center width="80%">

<tr align=center>

<td width="50%" align="right">

<FORM name=register method=post action=reg_shang.ASP?action=yes>

<input type="hidden" name="action" value="agree"><INPUT class="go-wenbenkuang" type=submit value=" 同意注册 " name=Submit>

</FORM>

</td>

<td width="50%" align="left">

<FORM action=index.asp method=post><INPUT class=go-wenbenkuang type=submit value=" 我不同意 "></FORM></td>

</tr>

</table>

<SCRIPT>

secs = 60; // Number of secs to delay -CHINA-studio

wait = secs * 100;

document.forms.register.Submit.disabled =true;

for(i=1;i<=(wait/100);i++) {

window.setTimeout("doUpdate(" + i + ")", i * 100);

}

window.setTimeout("Timer()", wait);

function doUpdate(num) {

if(num == (wait/100)) {

document.forms.register.Submit.value = " 同意注册 ";

} else {

wut = (wait/100)-num;

document.forms.register.Submit.value = " 同意前请先阅读 (" + wut + ")";

}

}

function Timer() {

document.forms.register.Submit.disabled =false;

}

</SCRIPT>