<script language="JavaScript">
<!--
function winshake(n) {                            
for (i = 10; i > 0; i--) {        
for (j = n; j > 0; j--) {
window.moveBy(0,i);       
window.moveBy(i,0);            
window.moveBy(0,-i);          
window.moveBy(-i,0);          
}
}
alert("窗口抖动结束！");
}
//-->
</script>
<p align=center><input onclick="winshake(3)" type="button" value="窗口抖动按钮"> </p>