function swapImage(imageToChangeID, imageSRC) {
    //  Swap image
    var imageToSwap
    imageToSwap = document.getElementById(imageToChangeID);

    imageToSwap.src = imageSRC;
}

function swapInnerHTML(elementID, newText) {
    //  Swap inner HTML
    var element
    element = document.getElementById(elementID);

    element.innerHTML = newText;
}

function swapHref(elementID, newHref) {
    var element
    element = document.getElementById(elementID);
    element.href = newHref;
}


function inputStyle(inputID) {
    //  Change style
    var inputBox
    inputBox = document.getElementById(inputID);

    if (inputBox.className == "inputOver") {
        inputBox.className = "inputOut";
    }
    else {
        inputBox.className = "inputOver";
    }
}

function toggleClass(elementID, originalCss, newCss) {
    var element;
    element = document.getElementById(elementID);

    if (element == null)
        return;

    if (element.className == originalCss)
        element.className = newCss;
    else
        element.className = originalCss;
}

function toggleElement(showElement, hideElement) {
    var elementToShow = document.getElementById(showElement);
    if (elementToShow == null)
        return;
    elementToShow.style.display = "block";

    var elementToHide = document.getElementById(hideElement);
    if (elementToHide == null)
        return;
    elementToHide.style.display = "none";
}

function changeStyle(elementID, cssClass) {
    //  Change style
    var element
    element = document.getElementById(elementID);

    element.className = cssClass;
}

function changeStyle2(topElementID, elementID, cssClass) {
    //  Change style
    var topElement
    topElement = document.getElementById(topElementID);
    var element
    element = document.getElementById(elementID);

    for (var i = 0; i < topElement.childNodes.length; i++) {
        var link
        link = topElement.childNodes[i];
        if (link.childNodes.length > 0)
            link.childNodes[0].className = "";
    }

    element.className = cssClass;
}

function showHide(elementID) {
    // Show or hide an element
    var element
    element = document.getElementById(elementID);

    if (element.style.display == "block") {
        element.style.display = "none";
    }
    else {
        element.style.display = "block";
    }
}

function showHide2(elementID) {
    // Show or hide an element
    var element
    element = document.getElementById(elementID);

    if (element.style.display == "none") {
        element.style.display = "block"; ;
    }
    else {
        element.style.display = "none"; ;
    }
}

function confirmMsg(message) {
    // Show a confirmation message

    if (confirm(message))
        return true;
    else
        return false;
}

function onClickMenu(elementID) {
    var justChanged = true;
    var menu;
    menu = document.getElementById(elementID);

    if (menu.style.display == "block") {
        menu.style.display = "none";
    }
    else {
        menu.style.display = "block";
    }

    menu.offclick = function (e) {
        if (!justChanged) {
            // Hide dropdown                                                                       
            menu.style.display = "none";

            removeEventBase(document, 'click', this.offclick, menu.id);
        }
        else {
            justChanged = false;
        }
    } .bind(menu);

    addEventBase(document, 'click', menu.offclick, menu.id);
}

function addEventBase(obj, type, fn, name_hash) {
    if (obj.addEventListener)
        obj.addEventListener(type, fn, false);
    else if (obj.attachEvent) {
        obj["e" + type + fn + name_hash] = fn;
        obj[type + fn + name_hash] = function () { obj["e" + type + fn + name_hash](window.event); }
        obj.attachEvent("on" + type, obj[type + fn + name_hash]);

    }
}


function search(elementID) {
    var element
    element = document.getElementById(elementID);

    if (element.value == "Search here")
        element.value = "";
    else if (element.value == "")
        element.value = "Search here";
}


function searchableText(elementID) {
    var element
    element = document.getElementById(elementID);

    if (element.value == "Search here" || element.value == "")
        return false ;

    return true;
}

function positionBox(boxID, e) {
    var box;
    box = document.getElementById(boxID);

    var obj2 = document.getElementById("mm");
    // Find the content offsetTop and offsetLeft relative to the BODY tag.
    var objLeft = obj2.offsetLeft;
    var objTop = obj2.offsetTop;
    var objParent = obj2.offsetParent;
    while (objParent.tagName.toUpperCase() != 'BODY') {
        objLeft += objParent.offsetLeft;
        objTop = objParent.offsetTop;
        objParent = objParent.offsetParent;
    }

    box.style.position = "absolute";
    box.style.left = e.clientX - objLeft + 40 + "px";
    box.style.top = objTop + "px";
}

function countCharacters(elementID, charactersAllowed, e) {
    var element;
    var keyCode;

    element = document.getElementById(elementID);

    // Look for a label that can be written to so we can show how many characters have been typed
    var lblResult;
    lblResult = document.getElementById(elementID + "_Result");
    if (lblResult != null) {
        var count = element.value.length;
        if (element.value == "")
            count = 0;
        lblResult.innerHTML = "(" + count + "/" + charactersAllowed + ")";
    }

    if (window.event)
        keyCode = window.event.keyCode;
    else
        keyCode = e.which;

    if (count > charactersAllowed) {
        element.className = "inputError";
        return false;
    }

    element.className = "inputOver";

    return true;
}


function populateTitle(target, element) {
    var element = document.getElementById(element);
    var target = document.getElementById(target);

    if (element == null || target == null)
        return;

    if (target.value != null) {
        if (target.value.length > 0)
            return;

        target.value = element.value;
    }
    else if (target.innerHtml != null) {
        if (target.innerHtml.length > 0)
            return;

        target.innerHtml = element.value;
    }
}


function showBlock(element) {
    var ele = document.getElementById(element);

    if (element == null)
        return;

    Effect.toggle(element, 'blind');
}

// Open and close all eBlocks
function toggleAllBlocks(show) {
    var pObject = document.getElementById("box");
    if (pObject == null)
        return;
    // Count the number of eBlocks in the box
    var elements = document.getElementsByClassName("eBlock", pObject);
    var count = elements.length;

    var h3Element;
    var aElement;
    // Loop through all eBlocks
    for (var i = 0; i < count; i++) {
        // Get the current eBlock
        var element = document.getElementsByClassName("eBlock", pObject)[i];
        if (element != null) {
            // Get the H3 element which contains the A tag with arrow
            h3Element = pObject.getElementsByTagName("H3")[i];
            if (h3Element != null) {
                // Get the child A element with arrow
                aElement = h3Element.firstChild;
                if (aElement != null) {
                    // Test to ensure we have the correct tag
                    if (aElement.nodeName == "A") {
                        if (show == 0) {
                            // Hide the section and display down arrow
                            element.style.display = "none";
                            aElement.className = "clickedSection";
                        }
                        else {
                            // Hide the section and display up arrow
                            element.style.display = "block";
                            aElement.className = "unclickedSection";
                        }
                    }
                }
            }
        }
    }
}

function drag(element) {
    var ele = document.getElementById(element);

    if (ele == null)
        return;

    new Draggable(element, { snap: 25, onStart: function () { ele.className = "helpDrag"; } });
}

function deleteElement(element) {
    var ele = document.getElementById(element);

    if (ele == null)
        return;

    if (confirm('Are you sure you want to delete this link?')) {
        /*new Effect.Pulsate(ele,{pulses: 1, duration: 1.5, from: 0.7, afterFinish: function() { return true; }});*/
        new Effect.Fade(ele, { afterFinish: function () { return true; } });
    }
    else {
        return false;
    }
}

// Limit text size in TextArea controls
function textAreaLimit(src, length) {
    var taObj = src;
    if (navigator.appName == 'Netscape')
        return; // Ignore
    else {
        if (taObj.value.length == length * 1)
            return false;
    }
}

// TextArea character counetrs
function textAreaCount(src, counter, length) {
    var oTextArea = src;
    var oCounter = getObject(counter);
    if (oTextArea.value.length > length * 1)
        oTextArea.value = oTextArea.value.substring(0, length * 1);
    if (oCounter)
        oCounter.innerHTML = length - oTextArea.value.length;
}

// Generic get object function
function getObject(obj) {
    var theObj;
    if (document.all) {
        if (typeof obj == "string") {
            return document.all(obj);
        } else {
            return obj.style;
        }
    }
    if (document.getElementById) {
        if (typeof obj == "string") {
            return document.getElementById(obj);
        } else {
            return obj.style;
        }
    }
    return null;
}

function test(e, divbox) {

    var panel = document.getElementById(divbox);

    panel.style.left = Event.pointerX(e) - 100 + 'px';
    panel.style.top = Event.pointerY(e) - 100 + 'px';

    //panel.style.left = '0px';
    //panel.style.top = '0px';

    Effect.Appear(divbox, { duration: 0.3 });

}

/*******************************
Overlays
*******************************/

function show_overlay(ol) {
    var overlay = document.getElementById("greyoverlay");

    var height = f_documentHeight().replace("px", "");
    if (f_clientHeight() > height) {
        height = f_clientHeight();
    }

    overlay.style.height = height + "px";
    overlay.style.display = "block";

    var obj = document.getElementById(ol);
    positionObject(obj, ol);
}

function hide_overlay(ol) {
    var obj = document.getElementById(ol);
    obj.style.display = "none";
    var objOverlay = document.getElementById("greyoverlay");
    objOverlay.style.display = "none";
}

/*******************************
AJAX Working
*******************************/

var popTop = 0; var theTop = 0; var old = 0; var temp = null;

function show_working() {
    var overlay = document.getElementById("overlay");
    overlay.style.height = f_documentHeight();
    overlay.style.display = "block";

    var obj = document.getElementById("working");
    positionObject(obj);
}

function hide_working() {
    var obj = document.getElementById("working");
    obj.style.display = "none";
    var objOverlay = document.getElementById("overlay");
    objOverlay.style.display = "none";
}

function positionObject(obj) {
    var winHeight = f_clientHeight();
    var scrollYPos = f_scrollTop();
    obj.style.top = (winHeight / 2) + scrollYPos + "px";

    var winWidth = f_clientWidth();
    var scrollXPos = f_scrollLeft();
    obj.style.left = (winWidth / 2) + scrollXPos + "px";

    obj.style.display = "block";
    //moveBg();
}

function moveBg() {
    var obj = document.getElementById("working");
    var overlay = document.getElementById("overlay");
    var pos = f_scrollTop();
    if (popTop + pos != old) {
        overlay.style.top = pos + "px";
        overlay.style.width = f_clientWidth() + "px";
        overlay.style.height = f_clientHeight() + "px";
    }
    old = popTop + pos;
    if (overlay.style.display == "block")
        temp = setTimeout("moveBg()", 100);
}

function f_clientWidth() {
    try {
        if (window.innerWidth)
            return window.innerWidth;
        else if (document.documentElement && document.documentElement.clientWidth)
            return document.documentElement.clientWidth;
        else if (document.body)
            return document.body.clientWidth;
    }
    catch (e) {
        return 0;
    }
}

function f_clientHeight() {
    try {
        if (window.innerHeight)
            return window.innerHeight;
        else if (document.documentElement && document.documentElement.clientHeight)
            return document.documentElement.clientHeight;
        else if (document.body)
            return document.body.clientHeight;
    }
    catch (e) {
        return 0;
    }
}

function f_scrollTop() {
    try {
        if (window.pageYOffset)
            return window.pageYOffset;
        else if (document.documentElement && document.documentElement.scrollTop)
            return document.documentElement.scrollTop;
        else if (document.body)
            return document.body.scrollTop;
    }
    catch (e) {
        return 0;
    }
}

function f_scrollLeft() {
    try {
        if (window.pageXOffset)
            return window.pageXOffset;
        else if (document.documentElement && document.documentElement.scrollLeft)
            return document.documentElement.scrollLeft;
        else if (document.body)
            return document.body.scrollLeft;
    }
    catch (e) {
        return 0;
    }
}

function f_scrollHeight() {
    try {
        if (window.pageYOffset)
            return window.pageYOffset;
        else if (document.documentElement && document.documentElement.scrollTop)
            return document.documentElement.scrollTop;
        else if (document.body)
            return document.body.scrollTop;
    }
    catch (e) {
        return 0;
    }
}

function f_documentHeight() {
    var doc_height = document.height ? document.height : 0; // Safari uses document.height

    if (document.documentElement && document.documentElement.scrollHeight) /* Strict mode */
        return Math.max(document.documentElement.scrollHeight, doc_height) + "px";
    else /* quirks mode */
        return Math.max(document.body.scrollHeight, doc_height) + "px";
}

//
//  Handles number of tickets being changed
//
function changeTickets(quantity, price, subtotal, total) {
    var quantityObj = getObject(quantity);
    var subtotalObj = getObject(subtotal);
    var totalObj = getObject(total);
    var date = totalObj.id.replace("t", "d");
    var dateObj = getObject(date);

    // Get total
    var totalCost = parseFloat(totalObj.innerHTML);

    // Get current sub-total
    var currentCost = parseFloat(subtotalObj.innerHTML);

    // Calculate new sub-total
    var newCost = quantityObj.selectedIndex * price;
    subtotalObj.innerHTML = newCost.toFixed(2);

    // Adjust total 
    totalCost += newCost - currentCost;
    if (totalCost < 0)
        totalCost = 0;
    totalObj.innerHTML = totalCost.toFixed(2);
    getObject("submit").disabled = totalCost == 0 || dateObj.value == 0;
    if (getObject("submitGiftAid") != null)
        getObject("submitGiftAid").disabled = totalCost == 0 || dateObj.value == 0;
    if (date.value != undefined) {
        if (date.value == 0) {
            getObject("datewarning").style.display = "block";
            getObject("datewarning").style.visibility = "visible";
        }
        else {
            getObject("datewarning").style.display = "none";
            getObject("datewarning").style.visibility = "hidden";
        }
    }
}

//
// Handles ticket date being changed
//
function changeDate(total) {
    var totalObj = getObject(total);
    var date = totalObj.id.replace("t", "d")
    var dateObj = getObject(date)

    // Enable/disable submit button
    getObject("submit").disabled = totalObj.innerHTML == "0.00" || dateObj.value == 0;
    getObject("submitGiftAid").disabled = totalObj.innerHTML == "0.00" || dateObj.value == 0;
    if (dateObj.value == 0) {
        getObject("datewarning").style.display = "block";
        getObject("datewarning").style.visibility = "visible";
    }
    else {
        getObject("datewarning").style.display = "none";
        getObject("datewarning").style.visibility = "hidden";
    }
}

//
//  Handles number of gift vouchers being changed
//
function changeGiftVouchers(quantity, price, subtotal, total) {
    var quantityObj = getObject(quantity);
    var subtotalObj = getObject(subtotal);
    var totalObj = getObject(total);

    // Get total
    var totalCost = parseFloat(totalObj.innerHTML);

    // Get current sub-total
    var currentCost = parseFloat(subtotalObj.innerHTML);

    // Calculate new sub-total
    var newCost = quantityObj.selectedIndex * price;
    subtotalObj.innerHTML = newCost.toFixed(2);

    // Adjust total 
    totalCost += newCost - currentCost;
    if (totalCost < 0)
        totalCost = 0;
    totalObj.innerHTML = totalCost.toFixed(2);
    getObject("submit").disabled = totalCost == 0;
}

//Insert Quicktime Movie (using qtObject)
function insertQuicktime(moviePath, movieName, movieWidth, movieHeight, autoStart, kioskMode, container) {
    var myQTObject = new QTObject(moviePath, movieName, movieWidth, movieHeight);
    myQTObject.addParam("autostart", autoStart);
    myQTObject.addParam("scale", "tofit");
    myQTObject.addParam("kioskmode", kioskMode);
    myQTObject.write(container);
}

function removeChildren(container) {
    var holder = document.getElementById(container); //the holder div
    while (holder.hasChildNodes()) {
        holder.removeChild(holder.lastChild);
    }
}

//function show_working() {
//    jQuery("#overlay").height(jQuery(document).height()).show().css({ opacity: 0 }).fadeTo(200, 0.8);
//    positionObject(jQuery("#working"));
//}

//function hide_working() {
//    jQuery("#working").hide();
//    jQuery("#overlay").hide();
//}


//function positionObject(obj) {
//    obj.css("top", (jQuery(window).height() / 2) + jQuery(window).scrollTop() + "px");
//    obj.css("left", (jQuery(window).width() / 2) + jQuery(window).scrollLeft() + "px");
//    obj.show();
//}