<script LANGUAGE="JAVASCRIPT">
    
        var answer = "这里是内容";
        setTimeout("showAns()",2000);
       
        function showAns () {
            document.write(answer);
        }

        </SCRIPT>

还有一个代码 也可以用的上，DZ注册协议那里的那个等待中提取出来的代码

<form name="bbrules" method="post" action=http://www.maqie.com>
<center>
<input class="button" type="submit" name="rulesubmit" value="正在加载下载地址，请耐心等待" style="height: 23px">
</center>
</form>

<script type="text/javascript">
var secs = 9;
var wait = secs * 1000;
document.bbrules.rulesubmit.value = "正在加载下载地址，请耐心等待(" + secs + ")";
document.bbrules.rulesubmit.disabled = true;
for(i = 1; i <= secs; i++) {
        window.setTimeout("update(" + i + ")", i * 1000);
}
window.setTimeout("timer()", wait);
function update(num, value) {
        if(num == (wait/1000)) {
                document.bbrules.rulesubmit.value = "正在加载下载地址，请耐心等待";
        } else {
                printnr = (wait / 1000) – num;
                document.bbrules.rulesubmit.value = "正在加载下载地址，请耐心等待(" + printnr + ")";
        }
}
function timer() {
        document.bbrules.rulesubmit.disabled = false;
        document.bbrules.rulesubmit.value = "地址加载完成,请点击进入下载";
}
</script>