var orgClassName;
function buttonOver(obj,className) {
    orgClassName   = obj.className;
    obj.className  = className;
}
function buttonOut(obj) {
    obj.className  = orgClassName;
}
function buttonClick(link) {
    window.location.href = link;
}
function highlightNavigation(objID,className) {
    if ((objID !=null) && (className != "")) {
        obj = document.getElementById(objID);
        if (obj != null) {
            obj.className  = className;
        }
    }
}

function highlightNavigationLeft(pageName,className) {
    if (pageName != "index.html") {
        var posSubPage  = pageName.indexOf("_");
        var posErw      = pageName.indexOf(".");
        var elementId   = "";
    
        if ((posSubPage != -1) && (posErw != -1)) {
            elementId = "nav" + pageName.substring(posSubPage+1,posErw);
            obj = document.getElementById(elementId);
            if (obj != null) {
                obj.className  = className;
            }
        }
    }
}