November 24, 2010 at 2:17 pm #72338
First of all, there is absolutely no way your background image should be 1.3mb. No way at all.
Having said that, here is a way using .htaccess to cache images:
# cache images and flash content for one month
Header set Cache-Control "max-age=2592000"
But let me reiterate, there is no way your image should be 1.3mb.