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// check if the browser is Navigator 3 or higher:
agent=navigator.userAgent;
browserVer=2;

if(agent.substring(0,7)=="Mozilla"){
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// preload universal images:

if (browserVer == 1)  {


        Research = new Image(133,29);
	Research.src = "/RUC/images/button/Research.gif";
        Research2 = new Image(133,29);
        Research2.src = "/RUC/images/button/ResearchOn.gif";

	Nhoods = new Image(133,29);
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	NLetters = new Image(133,29);
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        NLetters2 = new Image(133,29);
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        Books = new Image(133,29);
        Books.src = "/RUC/images/button/Books.gif";
        Books2 = new Image(133,29);
        Books2.src = "/RUC/images/button/BooksOn.gif";

	Video = new Image(133,29);
        Video.src = "/RUC/images/button/Video.gif";
        Video2 = new Image(133,29);
        Video2.src = "/RUC/images/button/VideoOn.gif";

	Curricula = new Image(133,29);
        Curricula.src = "/RUC/images/button/Curricula.gif";
        Curricula2 = new Image(133,29);
        Curricula2.src = "/RUC/images/button/CurriculaOn.gif";

        Exhibitions = new Image(133,29);
        Exhibitions.src = "/RUC/images/button/Exhibitions.gif";
        Exhibitions2 = new Image(133,29);
        Exhibitions2.src = "/RUC/images/button/ExhibitionsOn.gif";
        
        OtherPubs = new Image(133,29);
        OtherPubs.src = "/RUC/images/button/OtherPubs.gif";
        OtherPubs2 = new Image(133,29);
        OtherPubs2.src = "/RUC/images/button/OtherPubsOn.gif";

        Staff = new Image(133,29);
        Staff.src = "/RUC/images/button/Staff.gif";
        Staff2 = new Image(133,29);
        Staff2.src = "/RUC/images/button/StaffOn.gif";

        Search = new Image(133,29);
        Search.src = "/RUC/images/button/Search.gif";
        Search2 = new Image(133,29);
        Search2.src = "/RUC/images/button/SearchOn.gif";


        Contact = new Image(133,29);
        Contact.src = "/RUC/images/button/Contact.gif";
        Contact2 = new Image(133,29);
        Contact2.src = "/RUC/images/button/ContactOn.gif";

        SiteMap = new Image(133,29);
        SiteMap.src = "/RUC/images/button/SiteMap.gif";
        SiteMap2 = new Image(133,29);
        SiteMap2.src = "/RUC/images/button/SiteMapOn.gif";

        Project = new Image(133,29);
        Project.src = "/RUC/images/button/ProjectHome.gif";
        Project2 = new Image(133,29);
        Project2.src = "/RUC/images/button/ProjectHomeOn.gif";

        TPCHome = new Image(133,29);
        TPCHome.src = "/RUC/images/button/TPCHome.gif";
        TPCHome2 = new Image(133,29);
        TPCHome2.src = "/RUC/images/button/TPCHomeOn.gif";

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function hiLite(imgDocID, imgObjName) {

// imgDocID - the name or number of the document image to be replaced
// imgObjName - the name of the image object to be swapped in


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