if (document.images) {

imgCon = new Image(); imgCon.src = "../../images/on/caribscape.gif"; imgCoff = new Image(); imgCoff.src = "../../images/off/caribscape.gif";
imgBon = new Image(); imgBon.src = "../../images/on/base.gif"; imgBoff = new Image(); imgBoff.src = "../../images/off/base.gif";
imgLon = new Image(); imgLon.src = "../../images/on/logo.jpg"; imgLoff = new Image(); imgLoff.src = "../../images/off/logo.jpg";
imgIon = new Image(); imgIon.src = "../../images/on/icon.jpg"; imgIoff = new Image(); imgIoff.src = "../../images/off/icon.jpg";
imgZon = new Image(); imgZon.src = "../../images/on/builder.gif"; imgZoff = new Image(); imgZoff.src = "../../images/off/builder.gif";
imgUon = new Image(); imgUon.src = "../../images/nav/on/up_gry.gif"; imgUoff = new Image(); imgUoff.src = "../../images/nav/off/up_gry.gif";
imgPon = new Image(); imgPon.src = "../../images/on/acrobat.gif"; imgPoff = new Image(); imgPoff.src = "../../images/off/acrobat.gif";
imgGon = new Image(); imgGon.src = "../../images/table/gld/glob.gif"; imgGoff = new Image(); imgGoff.src = "../../images/table/gry/glob.gif";

img1on = new Image(); img1on.src = "../../images/on/institute.jpg"; img1off = new Image(); img1off.src = "../../images/off/institute.jpg";
img2on = new Image(); img2on.src = "../../images/on/staff.jpg"; img2off = new Image(); img2off.src = "../../images/off/staff.jpg";
img3on = new Image(); img3on.src = "../../images/on/research.jpg"; img3off = new Image(); img3off.src = "../../images/off/research.jpg";
img4on = new Image(); img4on.src = "../../images/on/pubs.jpg"; img4off = new Image(); img4off.src = "../../images/off/pubs.jpg";
img5on = new Image(); img5on.src = "../../images/on/postgrad.jpg"; img5off = new Image(); img5off.src = "../../images/off/postgrad.jpg";
img6on = new Image(); img6on.src = "../../images/on/consult.jpg"; img6off = new Image(); img6off.src = "../../images/off/consult.jpg";
img7on = new Image(); img7on.src = "../../images/on/profed.jpg"; img7off = new Image(); img7off.src = "../../images/off/profed.jpg";
img8on = new Image(); img8on.src = "../../images/on/workshop.jpg"; img8off = new Image(); img8off.src = "../../images/off/workshop.jpg";
imgNon = new Image(); imgNon.src = "../../images/on/news.jpg"; imgNoff = new Image(); imgNoff.src = "../../images/off/news.jpg";
imgWon = new Image(); imgWon.src = "../../images/on/webindex.jpg"; imgWoff = new Image(); imgWoff.src = "../../images/off/webindex.jpg";
imgMon = new Image(); imgMon.src = "../../images/on/contact.jpg"; imgMoff = new Image(); imgMoff.src = "../../images/off/contact.jpg";

img1Aon = new Image(); img1Aon.src = "../../images/nav/on_sap.gif"; img1Aoff = new Image(); img1Aoff.src = "../../images/nav/off.gif";
img2Aon = new Image(); img2Aon.src = "../../images/nav/on_sap.gif"; img2Aoff = new Image(); img2Aoff.src = "../../images/nav/off.gif";
img3Aon = new Image(); img3Aon.src = "../../images/nav/on_sap.gif"; img3Aoff = new Image(); img3Aoff.src = "../../images/nav/off.gif";
img4Aon = new Image(); img4Aon.src = "../../images/nav/on_sap.gif"; img4Aoff = new Image(); img4Aoff.src = "../../images/nav/off.gif";
img5Aon = new Image(); img5Aon.src = "../../images/nav/on_sap.gif"; img5Aoff = new Image(); img5Aoff.src = "../../images/nav/off.gif";
img6Aon = new Image(); img6Aon.src = "../../images/nav/on_sap.gif"; img6Aoff = new Image(); img6Aoff.src = "../../images/nav/off.gif";
img7Aon = new Image(); img7Aon.src = "../../images/nav/on_sap.gif"; img7Aoff = new Image(); img7Aoff.src = "../../images/nav/off.gif";
img8Aon = new Image(); img8Aon.src = "../../images/nav/on_sap.gif"; img8Aoff = new Image(); img8Aoff.src = "../../images/nav/off.gif";
imgNAon = new Image(); imgNAon.src = "../../images/nav/on_sap.gif"; imgNAoff = new Image(); imgNAoff.src = "../../images/nav/off.gif";
imgWAon = new Image(); imgWAon.src = "../../images/nav/on_sap.gif"; imgWAoff = new Image(); imgWAoff.src = "../../images/nav/off.gif";
imgMAon = new Image(); imgMAon.src = "../../images/nav/on_sap.gif"; imgMAoff = new Image(); imgMAoff.src = "../../images/nav/off.gif";

        }

function imgOn(imgName) {
        if (document.images) {
document[imgName].src = eval(imgName +"on.src");
        }
}

function imgOff(imgName) {
        if (document.images) {
document[imgName].src = eval(imgName + "off.src");
        }
}