动态的给标签添加提示信息

<div id="LUnameContentDiv" style="max-220px;height:24px;line-height:24px;overflow: hidden;" onmouseover="ContentMouseOver(this)" title="admin">
<span id="LUnameLabel" style="color:White;">admin</span>
</div>

function ContentMouseOver(div) {
$(div).attr("title", $("#LUnameLabel").text());
}