提交时的等待动画是怎么做出来的阿，请教高手！！！！！！！！！！
提交时的等待动画是怎么做出来的阿〉？如：mail.163   在登陆时的那个转动的小动画

------解决方案--------------------
我弄了一个简单的
function submitclueon(){
document.all.ButtonEare.innerHTML = " <img src=\ "images/Userpanel/ImgAdminPlugin.gif\ " width=\ "16\ " height=\ "16\ " hspace=\ "5\ " align=\ "absmiddle\ " /> <font color=red> 正在提交,请稍候...... </font> "
}

<form onsubmit= "javascript:submitclueon(); ">
<div align= "center " id= "ButtonEare "> <input type= "submit " name= "submit " value= "提 交 " /> </div>
</form>