var imgsObj = $('.amplifyImg img');//需要放大的图像
    if(imgsObj){
        $.each(imgsObj,function(){
            $(this).click(function(){
                var currImg = $(this);
                coverLayer(1);
                var tempContainer = $('<div class=tempContainer></div>');//图片容器
                with(tempContainer){//width方法等同于$(this)
                    appendTo("body");
                    var windowWidth=$(window).width();
                    var windowHeight=$(window).height();
                    //获取图片原始宽度、高度
                    var orignImg = new Image();
                    orignImg.src =currImg.attr("src") ;
                    var currImgWidth= orignImg.width;
                    var currImgHeight = orignImg.height;
                    if(currImgWidth<windowWidth){//为了让图片不失真，当图片宽度较小的时候，保留原图
                        if(currImgHeight<windowHeight){
                            var topHeight=(windowHeight-currImgHeight)/2;
                            if(topHeight>35){/*此处为了使图片高度上居中显示在整个手机屏幕中：因为在android,ios的微信中会有一个title导航，35为title导航的高度*/
                                topHeight=topHeight-35;
                                css('top',topHeight);
                            }else{
                                css('top',0);
                            }
                            html('<img border=0 src=' + currImg.attr('src') + '>');
                        }else{
                            css('top',0);
                            html('<img border=0 src=' + currImg.attr('src') + ' height='+windowHeight+'>');
                        }
                    }else{
                        var currImgChangeHeight=(currImgHeight*windowWidth)/currImgWidth;
                        if(currImgChangeHeight<windowHeight){
                            var topHeight=(windowHeight-currImgChangeHeight)/2;
                            if(topHeight>35){
                                topHeight=topHeight-35;
                                css('top',topHeight);
                            }else{
                                css('top',0);
                            }
                            html('<img border=0 src=' + currImg.attr('src') + ' width='+windowWidth+';>');
                        }else{
                            css('top',0);
                            html('<img border=0 src=' + currImg.attr('src') + ' width='+windowWidth+'; height='+windowHeight+'>');
                        }
                    }
                }
                tempContainer.click(function(){
                    $(this).remove();
                    coverLayer(0);
                    });
            });
        });
    }
    else{
        return false;
    }
    //使用禁用蒙层效果
    function coverLayer(tag){
        with($('.over')){
            if(tag==1){
                css('height',$(document).height());
                css('display','block');
                css('opacity',1);
                css("background-color","#191919");
            }
            else{
                css('display','none');
            }
        }
    }