分享一个最近写的Js滚屏类,兼容ie 6+,ff 3+,chrome

分享一个最近写的Js滚屏类,兼容ie 6+,ff 3+,chrome

 1 var Roller = {
 2         //  This Roller is compatible in ie 6+,ff 3+,chrome 
 3         //  Author : Daniel Chow 
 4         //  DateTime: 2009 - 4 - 25
 5         MyMar: null,rl1: null,rl2: null,rc1: null,
 6         Init: function(speed, r1, r2, rc) {
 7             Roller.rl1 = document.getElementById(r1);
 8             Roller.rl2 = document.getElementById(r2);
 9             Roller.rc1 = document.getElementById(rc);
             Roller.rl2.innerHTML = Roller.rl1.innerHTML;
             Roller.MyMar = setInterval(function() {
                 Roller.Rotate();
             }, speed);
             Roller.rc1.onmouseover = function() {
                 clearInterval(Roller.MyMar);
             };
             Roller.rc1.onmouseout = function() {
                 Roller.MyMar = setInterval(
                 function() {
                     Roller.Rotate();
                 }, speed);
             };
         },
         Rotate: function() {
             if (Roller.rl2.offsetTop - Roller.rc1.scrollTop <= 0)
                 Roller.rc1.scrollTop -= Roller.rl1.offsetHeight
             else {
                 Roller.rc1.scrollTop++;
             }
         }
     };