<script type="text/javascript">
var tid;
var bClicked = false;
function sbm(){
if(bClicked){
alert("提示您，请不要重复递交");
return false;
}
bClicked = true;
tid = setTimeout("doit()", 10000);
//document.forms[0].submit();
}function doit(){
if(tid!=null){clearTimeout(tid);tid=null;}
bClicked = false;
}
</script><form action="xxx" target="hf">
<input name="btn" type="button" οnclick="sbm();" value=" 提交 ">
</form>
<iframe name="hf"></iframe>