js代码
<script type="text/javascript">function display(id){ var traget=document.getElementById(id); if(traget.style.display=="none"){ traget.style.display=""; }else{ traget.style.display="none"; } } </script>
html
<input type="submit" value="在线支付" onclick="display('lb')"><div id="lb" style="display:none"><font>div属性：style ="display:none" 默认隐藏div</font></div>
