鼠标滚轮事件怎么写？
function move(){}

function over(){}

function wheel(event) {
var delta = 0;
if (!event) event = window.event;
if (event.wheelDelta) {
delta = event.wheelDelta / 120;
if (window.opera) delta = -delta;
} else if (event.detail) {
delta = -event.detail / 3;
}
if (delta < 0)
over();
else
move();

}
if (window.addEventListener)
window.addEventListener('DOMMouseScroll', wheel, false);
window.onmousewheel = document.onmousewheel = wheel;


这样写 over 和 move 能执行吗？

[解决办法]
自己试试啊
参考 http://www.cnblogs.com/rubylouvre/archive/2010/05/01/1725462.html