function toggleImg(imgId, newImg)
{ 
  if(document.images)
    document.images[imgId].src = eval(newImg + '.src')
}

if(document.images) 
{ 	
  navabout_f2 = new Image(57 ,10); navabout_f2.src = "i/button_about_us_s.jpg";
  navabout_f1 = new Image(57 ,10); navabout_f1.src = "i/button_about_us.jpg";
  navservice_f2 = new Image(57 ,10); navservice_f2.src = "i/button_service_s.jpg";
  navservice_f1 = new Image(57 ,10); navservice_f1.src = "i/button_service.jpg";
  navcontact_f2 = new Image(70 ,10); navcontact_f2.src = "i/button_contact_us_s.jpg";
  navcontact_f1 = new Image(70 ,10); navcontact_f1.src = "i/button_contact_us.jpg";  
  navsitemap_f2 = new Image(50 ,10); navsitemap_f2.src = "i/button_sitemap_s.jpg";
  navsitemap_f1 = new Image(50 ,10); navsitemap_f1.src = "i/button_sitemap.jpg";  
  navaboutus_cn_f2 = new Image(58 ,16); navaboutus_cn_f2.src = "i/button_aboutus_cn_s.jpg";
  navaboutus_cn_f1 = new Image(58 ,16); navaboutus_cn_f1.src = "i/button_aboutus_cn.jpg";
  navservice_cn_f2 = new Image(58 ,16); navservice_cn_f2.src = "i/button_service_cn_s.jpg";
  navservice_cn_f1 = new Image(58 ,16); navservice_cn_f1.src = "i/button_service_cn.jpg";
  navimage_1_f2 = new Image(184 ,13); navimage_1_f2.src = "i/nav_image_1_s.gif";
  navimage_1_f1 = new Image(184 ,13); navimage_1_f1.src = "i/nav_image_1.gif";
  navimage_2_f2 = new Image(184 ,14); navimage_2_f2.src = "i/nav_image_2_s.gif";
  navimage_2_f1 = new Image(184 ,14); navimage_2_f1.src = "i/nav_image_2.gif";
  navimage_3_f2 = new Image(184 ,13); navimage_3_f2.src = "i/nav_image_3_s.gif";
  navimage_3_f1 = new Image(184 ,13); navimage_3_f1.src = "i/nav_image_3.gif";
  navimage_4_f2 = new Image(184 ,13); navimage_4_f2.src = "i/nav_image_4_s.gif";
  navimage_4_f1 = new Image(184 ,13); navimage_4_f1.src = "i/nav_image_4.gif";
  navimage_5_f2 = new Image(184 ,13); navimage_5_f2.src = "i/nav_image_5_s.gif";
  navimage_5_f1 = new Image(184 ,13); navimage_5_f1.src = "i/nav_image_5.gif";
  navimage_6_f2 = new Image(184 ,10); navimage_6_f2.src = "i/nav_image_6_s.gif";
  navimage_6_f1 = new Image(184 ,10); navimage_6_f1.src = "i/nav_image_6.gif";
  navbullet_f2 = new Image(8 ,8); navbullet_f2.src = "i/bullet_s.gif";
  navbullet_f1 = new Image(8 ,8); navbullet_f1.src = "i/bullet.gif";
  navarrow_green_f2 = new Image(14 ,10); navarrow_green_f2.src = "i/arrow_green.gif";
  navarrow_green_f1 = new Image(14 ,10); navarrow_green_f1.src = "i/empty.gif";
}