打字测试

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>打字测试</title>
<style type="text/css">
body
{
font-family: 宋体;
font-size: 14px;
line-height: 120%;
}
.source
{
width: 99%;
height: 380px;
border: 1px solid #999999;
background-color: #efefef;
padding: 2px;
}
.textarea
{
width: 99%;
height: 100px;
}
</style>
</head>

<body>

<input type="radio" name="language" value="zh" checked="checked" />中文
<input type="radio" name="language" value="en" />英语

var started = 0;
var remain = 0;
var elaps = 0;
var scored = 0;

function startit()
{
if(started)
{
  if(remain)
  {
   if(confirm('您真的要停止吗？')) stat();
   else return false;

  }
  started = 0;
  form1.timer.disabled = false;
  form1.optn.value = '开始';
  document.getElementById('prompt').innerText = '限定时间(分钟)';
  clearInterval(timer);
}
else
{
  started = 1;
  form1.timer.disabled = true;
  form1.optn.value = '停止';
  document.getElementById('prompt').innerText = '剩余时间';
  remain = parseInt(form1.timer.value)*60;
  timer = setInterval('counter()',1000);

}
}

function counter()
{
remain --;
elaps ++;
if(remain==0)
{
  clearInterval(timer);
  startit();
  stat();
  return false;
}
minute = parseInt(remain / 60);
second = remain % 60;
form1.timer.value = minute + ':' + second;
}