function imageControl_detail(obj_img, srcWidth, srcHeight){
	var pxWidth, pxHeight;
	var image = new Image();
	image.src = obj_img.src;
	if(image.width > srcWidth){
		pxWidth = srcWidth / image.width;
		obj_img.width = srcWidth;
		obj_img.height = image.height * pxWidth;
	}
	if(obj_img.height > srcHeight){
		pxHeight = srcHeight / obj_img.height;
		obj_img.height = srcHeight;
		obj_img.width = obj_img.width * pxHeight;
	}
}