#for i in *.jpg; do gdalwarp -s_srs "epsg:4253" -t_srs "epsg:900913" -srcnodata "0 0 0" -dstnodata "0 0 0" -dstalpha $i warped/$i; done
for i in *.jpg; do gdalwarp -s_srs "epsg:4253" -t_srs "epsg:900913" $i warped/$i; done