(js) AutoScrollScreen

/** AutoScrollScreen.js [object]
 * @description 双击鼠标滚动屏幕静态[static]对象
 * IE 6.0, firefox 1.0, Opera 8.0 通过测试
 * @author 闲耘 (HoToo)
 * @author hotoo.cn@gmail.com
 *
 * @create 2006-6-15
 */

var AutoScrollScreen = new Object( );

 

AutoScrollScreen.delay = 50;

 

AutoScrollScreen.start = function(){
    AutoScrollScreen._timer =
        setInterval('AutoScrollScreen.scroll()',
            AutoScrollScreen.delay);
};

 

AutoScrollScreen.stop = function(){
    clearInterval(AutoScrollScreen._timer);
};

 

AutoScrollScreen.scroll = function(){
    var _currentpos = document.body.scrollTop;
    window .scroll( 0, ++_currentpos);
    if (_currentpos != document.body.scrollTop){
        this.stop();
    }
};

 

document.ondblclick = AutoScrollScreen.start;
document.onmousedown = AutoScrollScreen.stop;