<input type="button" id="downloadbtn" class="meng1an" onclick='if(timeout>0) {alert("停止计时");return false;}document.location="#"; this.
disabled=true;'>
<script type="text/
javascript">
//Js
倒计时代码
<!--
var timeout='10';
function countdown()
{
if (timeout <= 0)
{
document.getElementById("downloadbtn").value = '时间到';
if(document.getElementById("downloadfile"))document.getElementById("downloadfile").style.display = '';
}
if (timeout > 0)
{
document.getElementById("downloadbtn").value = '还有 '+timeout+' 秒';
setTimeout('countdown()',1000);
}
timeout--;
}
countdown();
-->
</script>
