function cutImg(imgdom, CutImgType, cutImgParent) {
    $(imgdom).each(function() {
        var $this = $(imgdom);
        $this.css("cssText", "");
        var objHeight, objWidth;
        //IE7+浏览器都能兼容的函数封装:获取图片的原始尺寸
        if ($this[0].naturalWidth && $this[0].naturalHeight) {
            objWidth = $this[0].naturalWidth;
            objHeight = $this[0].naturalHeight;
        } else {
            var img = new Image();
            img.src = $this[0].src;
            objWidth = img.width;
            objHeight = img.height;
        }
        var parentHeight, parentWidth;
        if (cutImgParent != undefined) {
            parentHeight = $this.parents(cutImgParent).eq(0).height(); //图片父容器高度
            parentWidth = $this.parents(cutImgParent).eq(0).width(); //图片父容器宽度
        } else {
            if ($this.parent().prop('tagName') == 'a' || $this.parent().prop('tagName') == 'A') {
                parentHeight = $this.parent().parent().height(); //图片父容器高度
                parentWidth = $this.parent().parent().width(); //图片父容器宽度
            } else {
                parentHeight = $this.parent().height(); //图片父容器高度
                parentWidth = $this.parent().width(); //图片父容器宽度
            }
        }
        var imgCssText = "";
        if (CutImgType == "autocut") {
            var ratio = objHeight / objWidth;
            if (objHeight > objWidth) { //赋值宽高
                if (parentWidth * ratio < parentHeight) {
                    imgCssText = "width:" + parentHeight / ratio + "px!important;height:" + parentHeight + "px!important;";
                } else {
                    imgCssText = "width:" + parentWidth + "px!important;height:" + parentWidth * ratio + "px!important;";
                }
                $this.css("cssText", imgCssText);
            } else if (objHeight < objWidth) {
                if (parentHeight / ratio < parentWidth) {
                    imgCssText = "width:" + parentWidth + "px!important;height:" + parentWidth * ratio + "px!important;";
                } else {
                    imgCssText = "width:" + parentHeight / ratio + "px!important;height:" + parentHeight + "px!important;";
                }
                $this.css("cssText", imgCssText);
            } else {
                if (parentHeight > parentWidth) { //赋值宽高
                    imgCssText = "width:" + parentHeight + "px!important;height:" + parentHeight + "px!important;";
                    $this.css("cssText", imgCssText);
                } else {
                    imgCssText = "width:" + parentWidth + "px!important;height:" + parentWidth + "px!important;";
                    $this.css("cssText", imgCssText);
                }
            }
            /*            objHeight=$this[0].height;//重新获取宽高
                        objWidth=$this[0].width;*/
            objHeight = $this.css("height").replace("px", "");
            objWidth = $this.css("width").replace("px", "");
            if (objHeight > objWidth) {
                if (objHeight == parentHeight) {
                    imgCssText = $this.attr("style") + ";margin-left:" + (parentWidth - objWidth) / 2 + "px!important;border:0px!important;";
                } else {
                    imgCssText = $this.attr("style") + ";margin-top:" + (parentHeight - objHeight) / 2 + "px!important;border:0px!important;";
                }
                $this.css("cssText", imgCssText);
            } else if (objHeight < objWidth) {
                if (objWidth == parentWidth) {
                    imgCssText = $this.attr("style") + ";margin-top:" + (parentHeight - objHeight) / 2 + "px!important;border:0px!important;";
                } else {
                    imgCssText = $this.attr("style") + ";margin-left:" + (parentWidth - objWidth) / 2 + "px!important;border:0px!important;";
                }
                $this.css("cssText", imgCssText);
            } else {
                if (parentHeight >= parentWidth) {
                    imgCssText = $this.attr("style") + ";margin-left:" + (parentWidth - objWidth) / 2 + "px!important;border:0px!important;"
                    $this.css("cssText", imgCssText);
                } else {
                    imgCssText = $this.attr("style") + ";margin-top:" + (parentHeight - objHeight) / 2 + "px!important;border:0px!important;";
                    $this.css("cssText", imgCssText);
                }
            }
        } else {
            try {
                var widthrate = objWidth / parentWidth;
                var heightrate = objHeight / parentHeight;
                var imgwidth = 0;
                var imgheight = 0;
                if (widthrate > 1 || heightrate > 1 || widthrate < 1 || heightrate < 1) {
                    if (CutImgType == "Scaling") //按比例缩放
                    {
                        var rate = Math.max(widthrate, heightrate);
                        imgwidth = Math.max(1, Math.min(objWidth / rate, parentWidth));
                        imgheight = Math.max(1, Math.min(objHeight / rate, parentHeight));
                    } else //拉伸
                    {
                        imgwidth = parentWidth;
                        imgheight = parentHeight;
                    }
                } else //大小合适
                {
                    imgwidth = parentWidth;
                    imgheight = parentHeight;
                }
                imgCssText += "width:" + imgwidth + "px!important;height:" + imgheight + "px!important;";
                $this.css("cssText", imgCssText);
                if (imgwidth > imgheight) {
                    if (imgwidth != parentWidth) {
                        imgCssText = $this.attr("style") + ";margin-left:" + (parentWidth - imgwidth) / 2 + "px!important;border:0px!important;";
                    } else {
                        imgCssText = $this.attr("style") + ";margin-top:" + (parentHeight - imgheight) / 2 + "px!important;border:0px!important;";
                    }
                    $this.css("cssText", imgCssText);
                } else {
                    if (imgheight != parentHeight) {
                        imgCssText = $this.attr("style") + ";margin-top:" + (parentHeight - imgheight) / 2 + "px!important;border:0px!important;";
                    } else {
                        imgCssText = $this.attr("style") + ";margin-left:" + (parentWidth - imgwidth) / 2 + "px!important;border:0px!important;";
                    }
                    $this.css("cssText", imgCssText);
                }
            } catch (e) {}
        }
    })
}