日期:2014-05-16 浏览次数:20383 次
<script type="text/javascript">
var etrue = false;
function eventStart(obj){
etrue = true;
if(etrue == true)
{
var wheel = function(event) {
var delta = 0;
if (!event) /* For IE. */
event = window.event;
if (event.wheelDelta) { /* IE/Opera. */
delta = event.wheelDelta / 120;
} else if (event.detail) {
delta = -event.detail / 3;
}
if (delta)
handle(delta);
if (event.preventDefault)
event.preventDefault();
event.returnValue = false;
};
if (window.addEventListener) {
window.addEventListener('DOMMouseScroll', wheel, false);
}
window.onmousewheel = document.onmousewheel = wheel;
var handle = function(delta) {
var random_num = Math.floor((Math.random() * 100) + 50);
if (delta < 0) {
alert("鼠标滑轮向下滚动:" + delta + "次!");
}&nb