由v2ex的回复页面的源码而来
<html>
<head>

<styletype="text/css">...

body,html{...}{
margin:0px;
padding:0px;
font-family:"LucidaGrande",Tahoma,Verdana,arial,sans-serif,hei;
background:#FFFurl("/img/bg_city.jpg")50%0fixedrepeat-y;
}

div.btn_2_o{...}{
width:120px;
height:21px;
background-image:url("btn_bg.png");
-moz-border-radius:5px;
background-color:#E0E0E0;
padding:0px;
margin:0px;
}


div.btn_2_i{...}{
text-align:center;
padding-top:3px;
color:#FFF;
font-size:12px;
}


div.btn_2_ia:link,div.btn_2_ia:visited,div.btn_2_ia:active{...}{
text-decoration:none;
color:#000;
}


div.btn_2_ia:hover{...}{
text-decoration:none;
color:#333;
}

.tip_i{...}{
font-size:12px;
color:#AFAFAF;
text-shadow:none;
}
</style>

<SCRIPTLANGUAGE="JavaScript">...
<!--

vargetObj=function(objId)...{
returndocument.all?document.all[objId]:document.getElementById(objId);
}
//-->
</SCRIPT>

</head>

<body>

<divalign="left"style="margin:10px0px0px0px;padding-left:390px;">

<scripttype="text/javascript">...
vari=newImage(15,15);i.src="loading.gif";

varchange=function()...{
varc=getObj("btn_8323");
c.innerHTML="<imgsrc=loading.gifalign=absmiddle/><spanclass=tip_i>Requesting</span>";
//varo=getObj("form_topic_reply");returno.submit();
}
</script>
<divid="btn_8323"align="center"style="width:120px;">
<divclass="btn_2_o"align="left"onclick="change();">
<divclass="btn_2_i"align="center">
<ahref="#;"onclick="change();"onmousedown="change();">Submit</a>
</div>
</div>
</div>
</div>
</body>
</html>



















































































点击之前截图
点击之后截图
本段代码所需要的图片
loading.gif
btn_bg.png