style.cursor 的可选值（鼠标的各种样式）

crosshair;		十字准心	The cursor render as a crosshair 游标表现为十字准线
cursor: pointer; cursor: hand; 写两个是为了照顾IE5，它只认hand。		手	The cursor render as a pointer (a hand) that indicates a link 游标以暗示(手指)的形式来表明有一个连接
cursor: wait;		等待/沙漏	The cursor indicates that the program is busy (often a watch or an hourglass) 游标暗示当前程序正忙(一般为一块表或是一个沙漏)
cursor: help;		帮助	The cursor indicates that help is available (often a question mark or a balloon) 游标暗示当前位置可得到帮助(一般为问号或是气球)
cursor: no-drop;		无法释放	cursor: no-drop;
cursor: text;		文字/编辑	The cursor indicates text 游标暗示当前所处位置为文字内容
cursor: move;		可移动对象	The cursor indicates something that should be moved 游标暗示一些东西应该被移动
cursor: n-resize;		向上改变大小(North)	The cursor indicates that an edge of a box is to be moved up (north) 边缘可向上移动(北)
cursor: s-resize;		向下改变大小(South)	The cursor indicates that an edge of a box is to be moved down (south) 边缘可向下方移动(南)
cursor: e-resize;		向右改变大小(East)	The cursor indicates that an edge of a box is to be moved right (east) box边缘可向右(东)边移动
cursor: w-resize;		向左改变大小(West)	The cursor indicates that an edge of a box is to be moved left (west) 边缘可向左移动(西)
cursor: ne-resize;		向上右改变大小(North East)	The cursor indicates that an edge of a box is to be moved up and right (north/east) 游标暗示box的边缘可向右上方移动(东北方向)
cursor: nw-resize;		向上左改变大小(North West)	The cursor indicates that an edge of a box is to be moved up and left (north/west) 边缘可向左上方移动(西北)
cursor: se-resize;		向下右改变大小(South East)	The cursor indicates that an edge of a box is to be moved down and right (south/east) 边缘可向右下方移动(东南)
cursor: sw-resize;		向下左改变大小(South West)	The cursor indicates that an edge of a box is to be moved down and left (south/west) 边缘可向左下方移动(西南)
cursor: auto;		自动	The browser sets a cursor 浏览器设置一个游标
cursor:not-allowed;		禁止	cursor:not-allowed;
cursor: progress;		处理中	cursor: progress;
cursor: default;		系统默认	The default cursor (often an arrow) 默认的游标状态（通常为一个箭头）
cursor: url(' # '); # = 光标文件地址 (注意文件格式必须为：.cur 或 .ani)。		用户自定义（可用动画）	The url of a custom cursor to be used. 自定义游标的url位置 Note: Always define a generic cursor at the end of the list in case none of the url-defined cursors can be used 注意：在定义完自定义的游标之后在末尾加上一般性的游标，以防那些url所定义的游标不能使用