<html><body><div onmousedown="mDown(this)" onmouseup="mUp(this)" style="background-color:#D94A38;width:200px;height:50px;padding-top:25px;text-align:center;">点击这里</div><script>function mDown(obj){obj.style.backgroundColor="#1ec5e5";obj.innerHTML="松开鼠标"}function mUp(obj){obj.style.backgroundColor="#D94A38";obj.innerHTML="谢谢你"}</script></body></html>