cursor:hand 仅仅ie only，FIREFOX底下就不可以正常渲染
cursor:pointer;
<span style="cursor:pointer;">hand 手型</span>
<span style="cursor:crosshair;">crosshair 十字</span>
<span style="cursor:text;">text 文本</span>
<span style="cursor:wait;">wait 等待</span>
<span style="cursor:help;">help 问号</span>
<span style="cursor:e-resize;">e-resize 右的箭头</span>
<span style="cursor:ne-resize;">ne-resize 右上的箭头</span>
<span style="cursor:n-resize;">n-resize 上的箭头</span>
<span style="cursor:nw-resize;">nw-resize 左上的箭头</span>
<span style="cursor:w-resize;">w-resize 左的箭头</span>
<span style="cursor:sw-resize;">sw-resize 左下的箭头</span>
<span style="cursor:s-resize;">s-resize 下的箭头</span>
<span style="cursor:se-resize;">se-resize 右下的箭头</span>
<span style="cursor:move;">move 移动</span>