category_imgs[0] = "/cms_files/N-12-nlImg.jpg";
category_imgs[1] = "/cms_files/N-13-nlImg.jpg";
category_imgs[2] = "/cms_files/N-14-nlImg.jpg";
category_imgs[3] = "/cms_files/N-15-nlImg.jpg";
category_imgs[4] = "/cms_files/N-17-nlImg.jpg";
category_imgs[5] = "/cms_files/N-18-nlImg.jpg";