iframe gone weird on mac

hi , i’m a complete novice out of my depth, my company asked me to design there company website, and i tried fairly succesfully to build a search engine with some help from various programs, problem is im trying to get the script to display the results in an iframe, on the mac it bursts out and flows down the page, doesnt happen on windows ie5 or firefox or safari, don’t have a clue how to fix, can anyone help a graphic designer trying to build sites with relatively no experience. ?

Also in #HTML _↴