实现点击图片图片放大效果(续)

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function EnlargeImage()
            ...{
                var myobj= document.getElementById("dongtaicon");//div的id，下面包含img
                var obj = myobj.getElementsByTagName("img");//获取div下面的img数组
                var img;
                for(var i=0;i<obj.length;i++)
                    ...{
                            obj[i].style.cursor = "pointer";
                            obj[i].alt = "点击放大图片";

                            if(window.addEventListener)//firefox等其它浏览器的事件添加
                            ...{
                             obj[i].addEventListener("click",
                                    function()
                                    ...{
                                        window.open(this.src);
                                    },
                                    false
                                );
                            } 
                            else//IE浏览器的事件添加
                            ...{
                                obj[i].attachEvent("onclick",
                                    function()
                                    ...{
                                        window.open(this.event.srcElement.src);
                                    }
                                );
                                obj[i].attachEvent("onload",
                                    function()
                                    ...{
                                        if(this.event.srcElement.width > 320)
                                        ...{
                                            this.event.srcElement.width = 320;
                                        }
                                    }
                                );
                            }   
                        }
                }