/* Ultimate Fade-in slideshow (v2.4)
 * Last updated: May 24th, 2010. This notice must stay intact for usage 
 * Author: Dynamic Drive at http://www.dynamicdrive.com/
 * Visit http://www.dynamicdrive.com/ for full source code
 */

//Oct 6th, 09' (v2.1): Adds option to randomize display order of images, via new option displaymode.randomize
//May 24th, 10' (v2.4): Adds new "peakaboo" option to "descreveal" setting. oninit and onslide event handlers added.

var fadeSlideShow_descpanel={
controls: [['images/x.png',7,7], ['images/restore.png',10,11], ['images/loading.gif',54,55]], //full URL and dimensions of close, restore, and loading images
          fontStyle: 'normal 11px Verdana', //font style for text descriptions
          slidespeed: 200 //speed of description panel animation (in millisec)
}

//No need to edit beyond here...

jQuery.noConflict()

  function fadeSlideShow(settingarg){
    this.setting=settingarg
      settingarg=null
      var setting=this.setting
      setting.fadeduration=setting.fadeduration? parseInt(setting.fadeduration) : 500
      setting.curimage=(setting.persist)? fadeSlideShow.routines.getCookie("gallery-"+setting.wrapperid) : 0
      setting.curimage=setting.curimage || 0 //account for curimage being null if cookie is empty
      setting.currentstep=0 //keep track of # of slides slideshow has gone through (applicable in displaymode='auto' only)
      setting.totalsteps=setting.imagearray.length*(setting.displaymode.cycles>0? setting.displaymode.cycles : Infinity) //Total steps limit (applicable in displaymode='auto' only w/ cycles>0)
      setting.fglayer=0, setting.bglayer=1 //index of active and background layer (switches after each change of slide)
      setting.oninit=setting.oninit || function(){}
    setting.onslide=setting.onslide || function(){}
    if (setting.displaymode.randomize) //randomly shuffle order of images?
      setting.imagearray.sort(function() {return 0.5 - Math.random()})
        var preloadimages=[] //preload images
        setting.longestdesc="" //get longest description of all slides. If no desciptions defined, variable contains ""
        for (var i=0; i<setting.imagearray.length; i++){ //preload images
          preloadimages[i]=new Image()
            preloadimages[i].src=setting.imagearray[i][0]
            if (setting.imagearray[i][3] && setting.imagearray[i][3].length>setting.longestdesc.length)
              setting.longestdesc=setting.imagearray[i][3]
        }
    var closebutt=fadeSlideShow_descpanel.controls[0] //add close button to "desc" panel if descreveal="always"
      setting.closebutton=(setting.descreveal=="always")? '<img class="close" src="'+closebutt[0]+'" style="float:right;cursor:hand;cursor:pointer;width:'+closebutt[1]+'px;height:'+closebutt[2]+'px;margin-left:2px" title="Hide Description" />' : ''
      var slideshow=this
      jQuery(document).ready(function($){ //fire on DOM ready
          var setting=slideshow.setting
          var fullhtml=fadeSlideShow.routines.getFullHTML(setting.imagearray) //get full HTML of entire slideshow
          setting.$wrapperdiv=$('#'+setting.wrapperid).css({position:'relative', visibility:'visible', background:'black', overflow:'hidden', width:setting.dimensions[0], height:setting.dimensions[1]}).empty() //main slideshow DIV
          if (setting.$wrapperdiv.length==0){ //if no wrapper DIV found
          alert("Error: DIV with ID \""+setting.wrapperid+"\" not found on page.")
          return
          }
          setting.$gallerylayers=$('<div class="gallerylayer"></div><div class="gallerylayer"></div>') //two stacked DIVs to display the actual slide 
          .css({position:'absolute', left:0, top:0, width:'100%', height:'100%', background:'black'})
          .appendTo(setting.$wrapperdiv)
          var $loadingimg=$('<img src="'+fadeSlideShow_descpanel.controls[2][0]+'" style="position:absolute;width:'+fadeSlideShow_descpanel.controls[2][1]+';height:'+fadeSlideShow_descpanel.controls[2][2]+'" />')
          .css({left:setting.dimensions[0]/2-fadeSlideShow_descpanel.controls[2][1]/2, top:setting.dimensions[1]/2-fadeSlideShow_descpanel.controls[2][2]}) //center loading gif
          .appendTo(setting.$wrapperdiv)
          var $curimage=setting.$gallerylayers.html(fullhtml).find('img').hide().eq(setting.curimage) //prefill both layers with entire slideshow content, hide all images, and return current image
          if (setting.longestdesc!="" && setting.descreveal!="none"){ //if at least one slide contains a description (versus feature is enabled but no descriptions defined) and descreveal not explicitly disabled
          fadeSlideShow.routines.adddescpanel($, setting)
          if (setting.descreveal=="always"){ //position desc panel so it's visible to begin with
          setting.$descpanel.css({top:setting.dimensions[1]-setting.panelheight})
          setting.$descinner.click(function(e){ //asign click behavior to "close" icon
            if (e.target.className=="close"){
            slideshow.showhidedescpanel('hide')
            }
            })
          setting.$restorebutton.click(function(e){ //asign click behavior to "restore" icon
              slideshow.showhidedescpanel('show')
              $(this).css({visibility:'hidden'})
              })
          }
          else if (setting.descreveal=="ondemand"){ //display desc panel on demand (mouseover)
            setting.$wrapperdiv.bind('mouseenter', function(){slideshow.showhidedescpanel('show')})
              setting.$wrapperdiv.bind('mouseleave', function(){slideshow.showhidedescpanel('hide')})
          }
          }
      setting.$wrapperdiv.bind('mouseenter', function(){setting.ismouseover=true}) //pause slideshow mouseover
        setting.$wrapperdiv.bind('mouseleave', function(){setting.ismouseover=false})
        if ($curimage.get(0).complete){ //accounf for IE not firing image.onload
          $loadingimg.hide()
            slideshow.paginateinit($)
            slideshow.showslide(setting.curimage)
        }
        else{ //initialize slideshow when first image has fully loaded
          $loadingimg.hide()
            slideshow.paginateinit($)
            $curimage.bind('load', function(){slideshow.showslide(setting.curimage)})
        }
      setting.oninit.call(slideshow) //trigger oninit() event
        $(window).bind('unload', function(){ //clean up and persist
            if (slideshow.setting.persist) //remember last shown image's index
            fadeSlideShow.routines.setCookie("gallery-"+setting.wrapperid, setting.curimage)
            jQuery.each(slideshow.setting, function(k){
              if (slideshow.setting[k] instanceof Array){
              for (var i=0; i<slideshow.setting[k].length; i++){
              if (slideshow.setting[k][i].tagName=="DIV") //catches 2 gallerylayer divs, gallerystatus div
              slideshow.setting[k][i].innerHTML=null
              slideshow.setting[k][i]=null
              }
              }
              })
            slideshow=slideshow.setting=null
            })
      })
  }

fadeSlideShow.prototype={

navigate:function(keyword){
           var setting=this.setting
             clearTimeout(setting.playtimer)
             if (setting.displaymode.type=="auto"){ //in auto mode
               setting.displaymode.type="manual" //switch to "manual" mode when nav buttons are clicked on
                 setting.displaymode.wraparound=true //set wraparound option to true
             }
           if (!isNaN(parseInt(keyword))){ //go to specific slide?
             this.showslide(parseInt(keyword))
           }
           else if (/(prev)|(next)/i.test(keyword)){ //go back or forth inside slide?
             this.showslide(keyword.toLowerCase())
           }
         },

showslide:function(keyword){
            var slideshow=this
              var setting=slideshow.setting
              if (setting.displaymode.type=="auto" && setting.ismouseover && setting.currentstep<=setting.totalsteps){ //if slideshow in autoplay mode and mouse is over it, pause it
                setting.playtimer=setTimeout(function(){slideshow.showslide('next')}, setting.displaymode.pause)
                  return
              }
            var totalimages=setting.imagearray.length
              var imgindex=(keyword=="next")? (setting.curimage<totalimages-1? setting.curimage+1 : 0)
              : (keyword=="prev")? (setting.curimage>0? setting.curimage-1 : totalimages-1)
              : Math.min(keyword, totalimages-1)
              var $slideimage=setting.$gallerylayers.eq(setting.bglayer).find('img').hide().eq(imgindex).show() //hide all images except current one
              var imgdimensions=[$slideimage.width(), $slideimage.height()] //center align image
              $slideimage.css({marginLeft: (imgdimensions[0]>0 && imgdimensions[0]<setting.dimensions[0])? setting.dimensions[0]/2-imgdimensions[0]/2 : 0})
              $slideimage.css({marginTop: (imgdimensions[1]>0 && imgdimensions[1]<setting.dimensions[1])? setting.dimensions[1]/2-imgdimensions[1]/2 : 0})
              if (setting.descreveal=="peekaboo" && setting.longestdesc!=""){ //if descreveal is set to "peekaboo", make sure description panel is hidden before next slide is shown
                clearTimeout(setting.hidedesctimer) //clear hide desc panel timer
                  slideshow.showhidedescpanel('hide', 0) //and hide it immediately
              }
            setting.$gallerylayers.eq(setting.bglayer).css({zIndex:1000, opacity:0}) //background layer becomes foreground
              .stop().css({opacity:0}).animate({opacity:1}, setting.fadeduration, function(){ //Callback function after fade animation is complete:
                  clearTimeout(setting.playtimer)
                  try{
                  setting.onslide.call(slideshow, setting.$gallerylayers.eq(setting.fglayer).get(0), setting.curimage)
                  }catch(e){
                  alert("Fade In Slideshow error: An error has occured somwhere in your code attached to the \"onslide\" event: "+e)
                  }
                  if (setting.descreveal=="peekaboo" && setting.longestdesc!=""){
                  slideshow.showhidedescpanel('show')
                  setting.hidedesctimer=setTimeout(function(){slideshow.showhidedescpanel('hide')}, setting.displaymode.pause-fadeSlideShow_descpanel.slidespeed)
                  } 
                  setting.currentstep+=1
                  if (setting.displaymode.type=="auto"){
                  if (setting.currentstep<=setting.totalsteps || setting.displaymode.cycles==0)
                  setting.playtimer=setTimeout(function(){slideshow.showslide('next')}, setting.displaymode.pause)
                  }
                  }) //end callback function
            setting.$gallerylayers.eq(setting.fglayer).css({zIndex:999}) //foreground layer becomes background
              setting.fglayer=setting.bglayer
              setting.bglayer=(setting.bglayer==0)? 1 : 0
              setting.curimage=imgindex
              if (setting.$descpanel){
                setting.$descpanel.css({visibility:(setting.imagearray[imgindex][3])? 'visible' : 'hidden'})
                  if (setting.imagearray[imgindex][3]) //if this slide contains a description
                    setting.$descinner.empty().html(setting.closebutton + setting.imagearray[imgindex][3])
              }
            if (setting.displaymode.type=="manual" && !setting.displaymode.wraparound){
              this.paginatecontrol()
            }
            if (setting.$status) //if status container defined
              setting.$status.html(setting.curimage+1 + "/" + totalimages)
          },

showhidedescpanel:function(state, animateduration){
                    var setting=this.setting
                      var endpoint=(state=="show")? setting.dimensions[1]-setting.panelheight : this.setting.dimensions[1]
                      setting.$descpanel.stop().animate({top:endpoint}, (typeof animateduration!="undefined"? animateduration : fadeSlideShow_descpanel.slidespeed), function(){
                          if (setting.descreveal=="always" && state=="hide")
                          setting.$restorebutton.css({visibility:'visible'}) //show restore button
                          })
                  },

paginateinit:function($){
               var slideshow=this
                 var setting=this.setting
                 if (setting.togglerid){ //if toggler div defined
                   setting.$togglerdiv=$("#"+setting.togglerid)
                     setting.$prev=setting.$togglerdiv.find('.prev').data('action', 'prev')
                     setting.$next=setting.$togglerdiv.find('.next').data('action', 'next')
                     setting.$prev.add(setting.$next).click(function(e){ //assign click behavior to prev and next controls
                         var $target=$(this)
                         slideshow.navigate($target.data('action'))
                         e.preventDefault()
                         })
                   setting.$status=setting.$togglerdiv.find('.status')
                 }
             },

paginatecontrol:function(){
                  var setting=this.setting
                    setting.$prev.css({opacity:(setting.curimage==0)? 0.4 : 1}).data('action', (setting.curimage==0)? 'none' : 'prev')
                    setting.$next.css({opacity:(setting.curimage==setting.imagearray.length-1)? 0.4 : 1}).data('action', (setting.curimage==setting.imagearray.length-1)? 'none' : 'next')
                    if (document.documentMode==8){ //in IE8 standards mode, apply opacity to inner image of link
                      setting.$prev.find('img:eq(0)').css({opacity:(setting.curimage==0)? 0.4 : 1})
                        setting.$next.find('img:eq(0)').css({opacity:(setting.curimage==setting.imagearray.length-1)? 0.4 : 1})
                    }
                }


}

fadeSlideShow.routines={

getSlideHTML:function(imgelement){
               var layerHTML=(imgelement[1])? '<a href="'+imgelement[1]+'" target="'+imgelement[2]+'">\n' : '' //hyperlink slide?
                 layerHTML+='<img src="'+imgelement[0]+'" style="border-width:0;" />\n'
                 layerHTML+=(imgelement[1])? '</a>\n' : ''
                 return layerHTML //return HTML for this layer
             },

getFullHTML:function(imagearray){
              var preloadhtml=''
                for (var i=0; i<imagearray.length; i++)
                  preloadhtml+=this.getSlideHTML(imagearray[i])
                    return preloadhtml
            },

adddescpanel:function($, setting){
               setting.$descpanel=$('<div class="fadeslidedescdiv"></div>')
                 .css({position:'absolute', visibility:'hidden', width:'100%', left:0, top:setting.dimensions[1], font:fadeSlideShow_descpanel.fontStyle, zIndex:'1001'})
                 .appendTo(setting.$wrapperdiv)
                 $('<div class="descpanelbg"></div><div class="descpanelfg"></div>') //create inner nav panel DIVs
                 .css({position:'absolute', left:0, top:0, width:setting.$descpanel.width()-8, padding:'4px'})
                 .eq(0).css({background:'black', opacity:0.7}).end() //"descpanelbg" div
                 .eq(1).css({color:'white'}).html(setting.closebutton + setting.longestdesc).end() //"descpanelfg" div
                 .appendTo(setting.$descpanel)
                 setting.$descinner=setting.$descpanel.find('div.descpanelfg')
                 setting.panelheight=setting.$descinner.outerHeight()
                 setting.$descpanel.css({height:setting.panelheight}).find('div').css({height:'100%'})
                 if (setting.descreveal=="always"){ //create restore button
                   setting.$restorebutton=$('<img class="restore" title="Restore Description" src="' + fadeSlideShow_descpanel.controls[1][0] +'" style="position:absolute;visibility:hidden;right:0;bottom:0;z-index:1002;width:'+fadeSlideShow_descpanel.controls[1][1]+'px;height:'+fadeSlideShow_descpanel.controls[1][2]+'px;cursor:pointer;cursor:hand" />')
                     .appendTo(setting.$wrapperdiv)


                 }
             },


getCookie:function(Name){ 
            var re=new RegExp(Name+"=[^;]+", "i"); //construct RE to search for target name/value pair
            if (document.cookie.match(re)) //if cookie found
              return document.cookie.match(re)[0].split("=")[1] //return its value
                return null
          },

setCookie:function(name, value){
            document.cookie = name+"=" + value + ";path=/"
          }
}