javascript实现表格排序 编辑 拖拽 缩放(2)

window.$ = function(Id){
    return document.getElementById(Id);
};
window.addListener = function(element,e,fn){
    !element.events&&(element.events = {});
    element.events[e]&&(element.events[e][addListener.guid++]=fn)||(element.events[e] = {'0':fn});
    element.addEventListener?element.addEventListener(e,fn,false):element.attachEvent("on" + e,fn);
};
window.addListener.guid = 1;
window.removeListener = function(element,e,fn){
    var handlers = element.events[e],type;
    if(fn){
        for(type in handlers)
            if(handlers[type]===fn){
                element.removeEventListener?element.removeEventListener(e,fn,false):element.detachEvent("on" + e,fn);
                delete handlers[type];
            }
    }else{
        for(type in handlers){
            element.removeEventListener?element.removeEventListener(e,handlers[type],false):element.detachEvent("on" + e,handlers[type]);
            delete handlers[type];
        }
    }       
};
window.setStyle = function(e,o){
    if(typeof o=="string")
        e.style.cssText=o;
    else   
        for(var i in o)
            e.style[i] = o[i];
};