Spry Sliding Panels - current panel height problem

Question

Hi guys,
Ive been trying for a while to make the sliding panels widget
show each panel in its own height instead of the longest panel's height in the container.
I tried reading all the js file to play with it and find a solution but the truth is i dont know how to do what i want.
I do, however, have a list of things that i believe if implemented should work,
could you guys help me do these fixes on the js? ( the one you think will work )
1. edit so that:  Panels dont have any height ( or panel content display none ) if it isnt current panel. If current panel is "id:1" the assume class 1 style properties. As soon as it looses focus/"currentpanel" class it looses its class 1 properties. And the new current panel ("id:2") assumes its own class 2 properties. And so on.
2. edit so that:  PanelContainer ( the one that holds all the panels ) displays none BUT the current panel. So all panels could be display none unless they assume the "currentpanel" class and so they change to display. Maybe this way the container assumes only the height of the displayed panel and looses it once its no longer displayed assuming the next displayed one.
3. edit so that:  Panel container checks for current panel's height and assumes that height instantly ( there is still a panel inside the container that would be longer than the current panel, maybe with overflow hidden this isnt a problem )
Please, if you can make the change in the js, i would appreciate greatly appreciate it. There is nothing in the entire web in to fixing this.
This is the SprySlidingPanels.js:
// SprySlidingPanels.js - version 0.5 - Spry Pre-Release 1.6
// Copyright (c) 2006. Adobe Systems Incorporated.
// All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//   * Neither the name of Adobe Systems Incorporated nor the names of its
//     contributors may be used to endorse or promote products derived from this
//     software without specific prior written permission.
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
var Spry;
if (!Spry) Spry = {};
if (!Spry.Widget) Spry.Widget = {};
Spry.Widget.SlidingPanels = function(element, opts)
    this.element = this.getElement(element);
    this.enableAnimation = true;
    this.currentPanel = null;
    this.enableKeyboardNavigation = true;
    this.hasFocus = false;
    this.previousPanelKeyCode = Spry.Widget.SlidingPanels.KEY_LEFT;
    this.nextPanelKeyCode = Spry.Widget.SlidingPanels.KEY_RIGHT;
    this.currentPanelClass = "SlidingPanelsCurrentPanel";
    this.focusedClass = "SlidingPanelsFocused";
    this.animatingClass = "SlidingPanelsAnimating";
    Spry.Widget.SlidingPanels.setOptions(this, opts);
    if (this.element)
        this.element.style.overflow = "hidden";
    // Developers can specify the default panel as an index,
    // id or an actual element node. Make sure to normalize
    // it into an element node because that is what we expect
    // internally.
    if (this.defaultPanel)
        if (typeof this.defaultPanel == "number")
            this.currentPanel = this.getContentPanels()[this.defaultPanel];
        else
            this.currentPanel = this.getElement(this.defaultPanel);
    // If we still don't have a current panel, use the first one!
    if (!this.currentPanel)
        this.currentPanel = this.getContentPanels()[0];
    // Since we rely on the positioning information of the
    // panels, we need to wait for the onload event to fire before
    // we can attempt to show the initial panel. Once the onload
    // fires, we know that all CSS files have loaded. This is
    // especially important for Safari.
    if (Spry.Widget.SlidingPanels.onloadDidFire)
        this.attachBehaviors();
    else
        Spry.Widget.SlidingPanels.loadQueue.push(this);
Spry.Widget.SlidingPanels.prototype.onFocus = function(e)
    this.hasFocus = true;
    this.addClassName(this.element, this.focusedClass);
    return false;
Spry.Widget.SlidingPanels.prototype.onBlur = function(e)
    this.hasFocus = false;
    this.removeClassName(this.element, this.focusedClass);
    return false;
Spry.Widget.SlidingPanels.KEY_LEFT = 37;
Spry.Widget.SlidingPanels.KEY_UP = 38;
Spry.Widget.SlidingPanels.KEY_RIGHT = 39;
Spry.Widget.SlidingPanels.KEY_DOWN = 40;
Spry.Widget.SlidingPanels.prototype.onKeyDown = function(e)
    var key = e.keyCode;
    if (!this.hasFocus || (key != this.previousPanelKeyCode && key != this.nextPanelKeyCode))
        return true;
    if (key == this.nextPanelKeyCode)
        this.showNextPanel();
    else /* if (key == this.previousPanelKeyCode) */
        this.showPreviousPanel();
    if (e.preventDefault) e.preventDefault();
    else e.returnValue = false;
    if (e.stopPropagation) e.stopPropagation();
    else e.cancelBubble = true;
    return false;
Spry.Widget.SlidingPanels.prototype.attachBehaviors = function()
    var ele = this.element;
    if (!ele)
        return;
    if (this.enableKeyboardNavigation)
        var focusEle = null;
        var tabIndexAttr = ele.attributes.getNamedItem("tabindex");
        if (tabIndexAttr || ele.nodeName.toLowerCase() == "a")
            focusEle = ele;
        if (focusEle)
            var self = this;
            Spry.Widget.SlidingPanels.addEventListener(focusEle, "focus", function(e) { return self.onFocus(e || window.event); }, false);
            Spry.Widget.SlidingPanels.addEventListener(focusEle, "blur", function(e) { return self.onBlur(e || window.event); }, false);
            Spry.Widget.SlidingPanels.addEventListener(focusEle, "keydown", function(e) { return self.onKeyDown(e || window.event); }, false);
    if (this.currentPanel)
        // Temporarily turn off animation when showing the
        // initial panel.
        var ea = this.enableAnimation;
        this.enableAnimation = false;
        this.showPanel(this.currentPanel);
        this.enableAnimation = ea;
Spry.Widget.SlidingPanels.prototype.getElement = function(ele)
    if (ele && typeof ele == "string")
        return document.getElementById(ele);
    return ele;
Spry.Widget.SlidingPanels.prototype.addClassName = function(ele, className)
    if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) != -1))
        return;
    ele.className += (ele.className ? " " : "") + className;
Spry.Widget.SlidingPanels.prototype.removeClassName = function(ele, className)
    if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) == -1))
        return;
    ele.className = ele.className.replace(new RegExp("\\s*\\b" + className + "\\b", "g"), "");
Spry.Widget.SlidingPanels.setOptions = function(obj, optionsObj, ignoreUndefinedProps)
    if (!optionsObj)
        return;
    for (var optionName in optionsObj)
        if (ignoreUndefinedProps && optionsObj[optionName] == undefined)
            continue;
        obj[optionName] = optionsObj[optionName];
Spry.Widget.SlidingPanels.prototype.getElementChildren = function(element)
    var children = [];
    var child = element.firstChild;
    while (child)
        if (child.nodeType == 1 /* Node.ELEMENT_NODE */)
            children.push(child);
        child = child.nextSibling;
    return children;
Spry.Widget.SlidingPanels.prototype.getCurrentPanel = function()
    return this.currentPanel;
Spry.Widget.SlidingPanels.prototype.getContentGroup = function()
    return this.getElementChildren(this.element)[0];
Spry.Widget.SlidingPanels.prototype.getContentPanels = function()
    return this.getElementChildren(this.getContentGroup());
Spry.Widget.SlidingPanels.prototype.getContentPanelsCount = function()
    return this.getContentPanels().length;
Spry.Widget.SlidingPanels.onloadDidFire = false;
Spry.Widget.SlidingPanels.loadQueue = [];
Spry.Widget.SlidingPanels.addLoadListener = function(handler)
    if (typeof window.addEventListener != 'undefined')
        window.addEventListener('load', handler, false);
    else if (typeof document.addEventListener != 'undefined')
        document.addEventListener('load', handler, false);
    else if (typeof window.attachEvent != 'undefined')
        window.attachEvent('onload', handler);
Spry.Widget.SlidingPanels.processLoadQueue = function(handler)
    Spry.Widget.SlidingPanels.onloadDidFire = true;
    var q = Spry.Widget.SlidingPanels.loadQueue;
    var qlen = q.length;
    for (var i = 0; i < qlen; i++)
        q[i].attachBehaviors();
Spry.Widget.SlidingPanels.addLoadListener(Spry.Widget.SlidingPanels.pr ocessLoadQueue);
Spry.Widget.SlidingPanels.addEventListener = function(element, eventType, handler, capture)
    try
        if (element.addEventListener)
            element.addEventListener(eventType, handler, capture);
        else if (element.attachEvent)
            element.attachEvent("on" + eventType, handler);
    catch (e) {}
Spry.Widget.SlidingPanels.prototype.getContentPanelIndex = function(ele)
    if (ele)
        ele = this.getElement(ele);
        var panels = this.getContentPanels();
        var numPanels = panels.length;
        for (var i = 0; i < numPanels; i++)
            if (panels[i] == ele)
                return i;
    return -1;
Spry.Widget.SlidingPanels.prototype.showPanel = function(elementOrIndex)
    var pIndex = -1;
    if (typeof elementOrIndex == "number")
        pIndex = elementOrIndex;
    else // Must be the element for the content panel.
        pIndex = this.getContentPanelIndex(elementOrIndex);
    var numPanels = this.getContentPanelsCount();
    if (numPanels > 0)
        pIndex = (pIndex >= numPanels) ? numPanels - 1 : pIndex;
    else
        pIndex = 0;
    var panel = this.getContentPanels()[pIndex];
    var contentGroup = this.getContentGroup();
    if (panel && contentGroup)
        if (this.currentPanel)
            this.removeClassName(this.currentPanel, this.currentPanelClass);
        this.currentPanel = panel;
        var nx = -panel.offsetLeft;
        var ny = -panel.offsetTop;
        if (this.enableAnimation)
            if (this.animator)
                this.animator.stop();
            var cx = contentGroup.offsetLeft;
            var cy = contentGroup.offsetTop;
            if (cx != nx || cy != ny)
                var self = this;
                this.addClassName(this.element, this.animatingClass);
                this.animator = new Spry.Widget.SlidingPanels.PanelAnimator(contentGroup, cx, cy, nx, ny, { duration: this.duration, fps: this.fps, transition: this.transition, finish: function()
                    self.removeClassName(self.element, self.animatingClass);
                    self.addClassName(panel, self.currentPanelClass);
                this.animator.start();
        else
            contentGroup.style.left = nx + "px";
            contentGroup.style.top = ny + "px";
            this.addClassName(panel, this.currentPanelClass);
    return panel;
Spry.Widget.SlidingPanels.prototype.showFirstPanel = function()
    return this.showPanel(0);
Spry.Widget.SlidingPanels.prototype.showLastPanel = function()
    return this.showPanel(this.getContentPanels().length - 1);
Spry.Widget.SlidingPanels.prototype.showPreviousPanel = function()
    return this.showPanel(this.getContentPanelIndex(this.currentPanel) - 1);
Spry.Widget.SlidingPanels.prototype.showNextPanel = function()
    return this.showPanel(this.getContentPanelIndex(this.currentPanel) + 1);
Spry.Widget.SlidingPanels.PanelAnimator = function(ele, curX, curY, dstX, dstY, opts)
    this.element = ele;
    this.curX = curX;
    this.curY = curY;
    this.dstX = dstX;
    this.dstY = dstY;
    this.fps = 60;
    this.duration = 500;
    this.transition = Spry.Widget.SlidingPanels.PanelAnimator.defaultTransition;
    this.startTime = 0;
    this.timerID = 0;
    this.finish = null;
    var self = this;
    this.intervalFunc = function() { self.step(); };
    Spry.Widget.SlidingPanels.setOptions(this, opts, true);
    this.interval = 1000/this.fps;
Spry.Widget.SlidingPanels.PanelAnimator.defaultTransition = function(time, begin, finish, duration) { time /= duration; return begin + ((2 - time) * time * finish); };
Spry.Widget.SlidingPanels.PanelAnimator.prototype.start = function()
    this.stop();
    this.startTime = (new Date()).getTime();
    this.timerID = setTimeout(this.intervalFunc, this.interval);
Spry.Widget.SlidingPanels.PanelAnimator.prototype.stop = function()
    if (this.timerID)
        clearTimeout(this.timerID);
    this.timerID = 0;
Spry.Widget.SlidingPanels.PanelAnimator.prototype.step = function()
    var elapsedTime = (new Date()).getTime() - this.startTime;
    var done = elapsedTime >= this.duration;
    var x, y;
    if (done)
        x = this.curX = this.dstX;
        y = this.curY = this.dstY;
    else
        x = this.transition(elapsedTime, this.curX, this.dstX - this.curX, this.duration);
        y = this.transition(elapsedTime, this.curY, this.dstY - this.curY, this.duration);
    this.element.style.left = x + "px";
    this.element.style.top = y + "px";
    if (!done)
        this.timerID = setTimeout(this.intervalFunc, this.interval);
    else if (this.finish)
        this.finish();

Answer 1

Add a valid Document Type Declaration on your page. (DTD) and it should work smoothly.. You could have found this out if you would just validate your page. validator.w3.org.