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        var browserMac = navigator.appVersion.indexOf("Macintosh");

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        var loaded = false;

        var version = "ack";


        if (browserName == "Netscape"

                && browserVer >= 3) version = "n3";


        if (browserName == "Microsoft Internet Explorer"

                && browserVer >= 3.01

                && browserMac != -1) version = "ie3m";


        if (browserName == "Microsoft Internet Explorer"

                && browserVer >= 4) version = "ie4";


        // ========================= rollover code


        var rollOk = (version == "n3"

                || version == "ie3m"

                || version == "ie4") ? true : false;


        if (rollOk) {

                img1off = new Image();

                img1off.src = "/_media/images/nav/1-0.gif";

                img2off = new Image();

                img2off.src = "/_media/images/nav/2-0.gif";

				img3off = new Image();

                img3off.src = "/_media/images/nav/3-0.gif";

				img4off = new Image();

                img4off.src = "/_media/images/nav/4-0.gif";

				img5off = new Image();

                img5off.src = "/_media/images/nav/overview.gif";

				img6off = new Image();

                img6off.src = "/_media/images/nav/team.gif";

				img7off = new Image();

                img7off.src = "/_media/images/nav/clients.gif";

				img8off = new Image();

                img8off.src = "/_media/images/nav/directions.gif";

				img9off = new Image();

                img9off.src = "/_media/images/nav/jobs.gif";

				img10off = new Image();

                img10off.src = "/_media/images/nav/usability.gif";

				img11off = new Image();

                img11off.src = "/_media/images/nav/compliance.gif";

				img12off = new Image();

                img12off.src = "/_media/images/nav/design.gif";

				img13off = new Image();

                img13off.src = "/_media/images/nav/human_factors.gif";

				img14off = new Image();

                img14off.src = "/_media/images/nav/usability_testing.gif";

				img15off = new Image();

                img15off.src = "/_media/images/nav/contextual_inquiry.gif";

				img16off = new Image();

                img16off.src = "/_media/images/nav/expert_reviews.gif";

				img17off = new Image();

                img17off.src = "/_media/images/nav/pilot.gif";

				img18off = new Image();

                img18off.src = "/_media/images/nav/focus_groups.gif";

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                img19off.src = "/_media/images/nav/market_research-0.gif";


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				img4on = new Image();

                img4on.src = "/_media/images/nav/4-1.gif";

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                img5on.src = "/_media/images/nav/overview-on.gif";

				img6on = new Image();

                img6on.src = "/_media/images/nav/team-on.gif";

				img7on = new Image();

                img7on.src = "/_media/images/nav/clients-on.gif";

				img8on = new Image();

                img8on.src = "/_media/images/nav/directions-on.gif";

				img9on = new Image();

                img9on.src = "/_media/images/nav/jobs-on.gif";

				img10on = new Image();

                img10on.src = "/_media/images/nav/usability-on.gif";

				img11on = new Image();

                img11on.src = "/_media/images/nav/compliance-on.gif";

				img12on = new Image();

                img12on.src = "/_media/images/nav/design-on.gif";

				img13on = new Image();

                img13on.src = "/_media/images/nav/human_factors-on.gif";

				img14on = new Image();

                img14on.src = "/_media/images/nav/usability_testing_on.gif";

				img15on = new Image();

                img15on.src = "/_media/images/nav/contextual_inquiry-on.gif";

				img16on = new Image();

                img16on.src = "/_media/images/nav/expert_reviews-on.gif";

				img17on = new Image();

                img17on.src = "/_media/images/nav/pilot-on.gif";

				img18on = new Image();

                img18on.src = "/_media/images/nav/focus_groups-on.gif";

				img19on = new Image();

                img19on.src = "/_media/images/nav/market_research-1.gif";

				loaded = true;

        }


        function rollOver(imgName, imgNum) {

                if (rollOk) {

                        if (loaded) {

                                if (imgName != "whatsnew") {

                                        imgOn = eval(imgName + "on.src");

                                        document.images[imgName].src = imgOn;

                                }       


                        }

                }

        }


        function rollOut(imgName, imgNum) {

                imgOff = eval(imgName + "off.src");

                document.images[imgName].src = imgOff;

            }

// -->