NAV_HIDE_DELAY = 500; // wait to hide navigation (ms)

navTimeout = null;
currentNav = "";
currentSubnav = "";
defaultNav = "";

rslt = navigator.appVersion.match(/MSIE (\d+\.\d+)/, '');
isIframe = (rslt != null && Number(rslt[1]) <= 6);
isIE55 = (rslt != null && Number(rslt[1]) == 5.5);

function showNav(navName) {
    if (pageLoaded && (navName != currentNav || navTimeout != null)) {

        resetDelayedHide();

        if (currentNav != "") {
            hideAllNav();
        }

        if (defaultNav != "" && navName != defaultNav) {
            hideLayer(defaultNav + "Dhtmlnav");
        }

        if (defaultNav != navName) {
            navSwap(navName, "On");
        }

        showLayer("hideDhtml");
        showLayer(navName + "Dhtmlnav");

        if (isIframe) {
            setIframe(navName + "Dhtmlnav");
            showLayer(navName + "DhtmlnavIFrame");
        }

        currentNav = navName;
    }
}

function showSubnav(subnavName) {
    if (pageLoaded && (subnavName != currentSubnav || navTimeout != null)) {

        resetDelayedHide();

        if (currentSubnav != "") {
            hideAllSubnav();
        }

        showLayer("hideDhtml");
        swapStyle(document.getElementById(subnavName + "DhtmlNavitem"), "dhtmlnavitemOn");
        showLayer(subnavName + "DhtmlSubnav");

        if (isIframe) {
            setIframe(subnavName + "DhtmlSubnav");
            showLayer(subnavName + "DhtmlSubnavIFrame");
        }

        currentSubnav = subnavName;
    }
}


function resetDelayedHide() {
    if (navTimeout != null) {
        clearTimeout(navTimeout);
        navTimeout = null;
    }
}

function delayedNavHide() {
    if (pageLoaded && currentNav != "" && navTimeout == null) {
        hideLayer("hideDhtml");
        navTimeout = setTimeout("hideAllNav()", NAV_HIDE_DELAY);
    }
}

function hideAllNav() {
    if (currentNav != "") {
        navSwap(currentNav, "Off");
        hideLayer(currentNav + "Dhtmlnav");
        if (isIframe) {
            hideLayer(currentNav + "DhtmlnavIFrame");
        }
        currentNav = "";

        if (defaultNav != "") {
            navSwap(defaultNav, "On");
            // showLayer(defaultNav + "Dhtmlnav");
        }

        navTimeout = null;
        hideAllSubnav();
    }
}

function hideAllSubnav() {
    if (currentSubnav != "") {
        swapStyle(document.getElementById(currentSubnav + "DhtmlNavitem"), "dhtmlnavitem");
        hideLayer(currentSubnav + "DhtmlSubnav");
        if (isIframe) {
            hideLayer(currentSubnav + "DhtmlSubnavIframe");
        }
        currentSubnav = "";
        navTimeout = null;
    }
}

function swapStyle(element, className) {
    element.className = className;
}

function showLayer(layerId) {
    if (pageLoaded && document.getElementById(layerId)) {
        document.getElementById(layerId).style.visibility = "visible";
        document.getElementById(layerId).style.display = "block";
    }
}

function hideLayer(layerId) {
    if (pageLoaded && document.getElementById(layerId)) {
        document.getElementById(layerId).style.visibility = "hidden";
        document.getElementById(layerId).style.display = "none";
    }
}


// Uses the arguments[] array to get the ID's of each layer to hide.
function hideDropdowns() {
    for (var i = 0; i < arguments.length; i++) {
        document.getElementById(arguments[i]).style.visibility = "hidden";
    }
}

function navSwap(prefix, onOff) {
    if (document[prefix + "Image"]) {
        document[prefix + "Image"].src = eval(prefix + "Image" + onOff).src;
    }
    if (document.getElementById(prefix + "Link")) {
        swapStyle(document.getElementById(prefix + "Link"), "navLink" + onOff);
    }
}

function setIframe(layerName) {
    if (isIframe && document.getElementById(layerName + "IFrame")) {
        obj = document.getElementById(layerName);
        ifrm = document.getElementById(layerName + "IFrame");

        ifrm.style.top = obj.offsetTop;
        ifrm.style.left = obj.offsetLeft;
        ifrm.style.height = obj.offsetHeight;
        ifrm.style.width = obj.offsetWidth;
    }
}

//hideDhtmlObj = document.createElement("div");
//hideDhtmlObj.id = "hideDhtml";
//hideDhtmlObj.innerHTML = "<img src=\"http://www.prideindustries.com/common/images/spacer.gif\" width=\"99%\" height=\"99%\" border=\"0\" alt=\"\" galleryimg=\"no\">";
//hideDhtmlObj.parentId = null;

//function fixHideDhtml() {
//    if (hideDhtmlObj.parentId) {
//        document.getElementById(hideDhtmlObj.parentId).appendChild(hideDhtmlObj);
//    } else {
//        document.body.appendChild(hideDhtmlObj);
//    }

//    if (document.body.scrollHeight > document.body.offsetHeight) {
//        hideDhtmlObj.style.height = document.body.scrollHeight;
//    } else {
//        hideDhtmlObj.style.height = document.body.offsetHeight * .99;
//    }
//}

//addOnLoad(fixHideDhtml);