代码：
<html><head><title>响应鼠标自动选中文本框内容</title></head><body><input id="a" type="text" value="请输入搜索词" οnmοuseοver="selectInputContent(this.id)"/><script type="text/javascript">function selectInputContent(n){obj =document.getElementById(n);obj.focus();obj.select();}</script></body></html>
