Everytime you make a change, it send a new query back to server, the server will feed back with a new image. you can modify the following url to see what image server feedback. http://www.customink.com/text/gen?op[txt]=test123&op[fnt]=Impact01&op[ht]=80&op[sf]=20&op[r]=91&op[g]=24&op[b]=93&op[cf]=false&op[as]=0&op[st]=0&op[s_r]=0&op[s_g]=0&op[s_b]=0&op[ef]=normal&op[efs]=0&op[ro]=0