if (document.images)
{ // preload our rollover images
	imgOurHistoryOver = new Image();
	imgOurHistoryOver.src = "/images/sub_our_history_over.gif";
	imgOurTeamOver = new Image();
	imgOurTeamOver.src = "/images/sub_our_team_over.gif";
	imgOurPartnersOver = new Image();
	imgOurPartnersOver.src = "/images/sub_our_partners_over.gif";
	imgWhatWeDoOver = new Image();
	imgWhatWeDoOver.src = "/images/sub_what_we_do_over.gif";

  // preload our normal images
	imgOurHistoryOff = new Image();
	imgOurHistoryOff.src = "/images/sub_our_history_off.gif";
	imgOurTeamOff = new Image();
	imgOurTeamOff.src = "/images/sub_our_team_off.gif";
	imgOurPartnersOff = new Image();
	imgOurPartnersOff.src = "/images/sub_our_partners_off.gif";
	imgWhatWeDoOff = new Image();
	imgWhatWeDoOff.src = "/images/sub_what_we_do_off.gif";
}