// SprySlidingPanels.js - version 0.5 - Spry Pre-Release 1.6.1
// 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";if(this.defaultPanel)
{if(typeof this.defaultPanel=="number")
this.currentPanel=this.getContentPanels()[this.defaultPanel];else
this.currentPanel=this.getElement(this.defaultPanel);}
if(!this.currentPanel)
this.currentPanel=this.getContentPanels()[0];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
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)
{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)
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.processLoadQueue);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
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();};