.cat-500 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -100% 0%; }
.cat-501 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: 0% -300%;}
.cat-502 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: 0% -100%;}
.cat-503 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -100% -100%;}
.cat-504 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -200% 0%;}
.cat-505 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -200% -100%;}
.cat-506 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: 0% -200%;}
.cat-507 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -100% -200%;}
.cat-508 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -200% -200%;}
.cat-509 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -300% 0%;}
.cat-510 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -300% -100%;}
.cat-511 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -300% -200%;}
.cat-512 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: 0% 0%;}
.cat-513 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -100% -300%;}
.cat-514 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -200% -300%;}
.cat-515 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -300% -300%;}
.cat-516 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -400% 0%;}
.cat-517 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -400% -100%;}
.cat-518 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -400% -200%;}
.cat-519 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -400% -300%;}
.cat-520 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: 0% -400%;}
.cat-521 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -100% -400%;}
.cat-522 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -200% -400%;}
.cat-523 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -300% -400%;}
.cat-524 { background-image: url(sprite500-524.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -400% -400%;}