<div class="select_option_list" onmousewheel="return scroll(event,this)"></div>
var scroll = function(event,scroller){
var k = event.wheelDelta? event.wheelDelta:-event.detail*10;
scroller.scrollTop = scroller.scrollTop - k;
return false;
};
原文：http://www.cnblogs.com/love9happy/p/7102623.html