//Featured Content Glider: By http://www.dynamicdrive.com
//Created: Dec 22nd, 07'
//Updated (Jan 29th, 08): Added four possible slide directions: "updown", "downup", "leftright", or "rightleft"
//Updated (Feb 1st, 08): Changed glide behavior to reverse direction when previous button is clicked
//Updated (Feb 12th, 08): Added ability to retrieve gliding contents from an external file using Ajax ("remotecontent" variable added to configuration)

var featuredcontentglider={
 csszindex: 100,
 ajaxloadingmsg: '<b>Fetching Content. Please wait...</b>',
 glide:function(config, showpage, isprev){
 var selected=parseInt(showpage)
 if (selected>=config.$contentdivs.length){ //if no content exists at this index position
 alert("No content exists at page "+(selected+1)+"! Loading 1st page instead.")
 selected=0
 }
 var $target=config.$contentdivs.eq(selected)
 //Test for toggler not being initialized yet, or user clicks on the currently selected page):
 if (config.$togglerdiv.attr('lastselected')==null || parseInt(config.$togglerdiv.attr('lastselected'))!=selected){
 var $selectedlink=config.$toc.eq(selected)
 config.$next.attr('loadpage', (selected<config.$contentdivs.length-1)? selected+1+'pg' : 0+'pg')
 config.$prev.attr('loadpage', (selected==0)? config.$contentdivs.length-1+'pg' : selected-1+'pg')
 var startpoint=(isprev=="previous")? -config.startpoint : config.startpoint
 $target.css(config.leftortop, startpoint).css("zIndex", this.csszindex++) //hide content so it's just out of view before animating it
 var endpoint=(config.leftortop=="left")? {left:0} : {top:0} //animate it into view
 $target.animate(endpoint, config.speed)
 config.$toc.removeClass('selected')
 $selectedlink.addClass('selected')
 config.$togglerdiv.attr('lastselected', selected+'pg')
 }
 },

 getremotecontent:function(config){
 config.$glider.html(this.ajaxloadingmsg)
 $.ajax({
 url: config.remotecontent,
 error:function(ajaxrequest){
 config.$glider.html('Error fetching content.<br />Server Response: '+ajaxrequest.responseText)
 },
 success:function(content){
 config.$glider.html(content)
 featuredcontentglider.setuptoggler(config)
 }
 })
 },

 aligncontents:function(config){
 config.$contentdivs=$("#"+config.gliderid+" ."+config.contentclass)
 config.$contentdivs.css(config.leftortop, config.startpoint).css({height: config.$glider.height(), visibility: 'visible'}) //position content divs so they're out of view:
 },

 setuptoggler:function(config){
 this.aligncontents(config)
 config.$togglerdiv.hide()
 config.$toc.each(function(index){
 $(this).attr('pagenumber', index+'pg')
 if (index > (config.$contentdivs.length-1))
 $(this).css({display: 'none'}) //hide redundant "toc" links
 })
 var $nextandprev=$("#"+config.togglerid+" .next, #"+config.togglerid+" .prev")
 $nextandprev.click(function(event){ //Assign click behavior to 'next' and 'prev' links
 featuredcontentglider.glide(config, this.getAttribute('loadpage'), this.getAttribute('buttontype'))
 event.preventDefault() //cancel default link action
 })
 config.$toc.click(function(event){ //Assign click behavior to 'toc' links
 featuredcontentglider.glide(config, this.getAttribute('pagenumber'))
 event.preventDefault()
 })
 config.$togglerdiv.fadeIn(1000, function(){
 featuredcontentglider.glide(config, config.selected)
 if (config.autorotate==true){ //auto rotate contents?
 config.stepcount=0 //set steps taken
 config.totalsteps=config.$contentdivs.length*config.autorotateconfig[1] //Total steps limit: num of contents x num of user specified cycles)
 featuredcontentglider.autorotate(config)
 }
 })
 config.$togglerdiv.click(function(){
 featuredcontentglider.cancelautorotate(config.togglerid)
 })
 },

 autorotate:function(config){
 var rotatespeed=config.speed+config.autorotateconfig[0]
 window[config.togglerid+"timer"]=setInterval(function(){
 if (config.totalsteps>0 && config.stepcount>=config.totalsteps){
 clearInterval(window[config.togglerid+"timer"])
 }
 else{
 config.$next.click()
 config.stepcount++
 }
 }, rotatespeed)
 },

 cancelautorotate:function(togglerid){
 if (window[togglerid+"timer"])
 clearInterval(window[togglerid+"timer"])
 },

 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
 },

 init:function(config){
 $(document).ready(function(){
 config.$glider=$("#"+config.gliderid)
 config.$togglerdiv=$("#"+config.togglerid)
 config.$toc=config.$togglerdiv.children('.toc')
 config.$next=config.$togglerdiv.children('.next')
 config.$prev=config.$togglerdiv.children('.prev')
 config.$prev.attr('buttontype', 'previous')
 var selected=(config.persiststate)? featuredcontentglider.getCookie(config.gliderid) : config.selected
 config.selected=(isNaN(parseInt(selected))) ? config.selected : selected //test for cookie value containing null (1st page load) or "undefined" string
 config.leftortop=(/up/i.test(config.direction))? "top" : "left" //set which CSS property to manipulate based on "direction"
 config.heightorwidth=(/up/i.test(config.direction))? config.$glider.height() : config.$glider.width() //Get glider height or width based on "direction"
 config.startpoint=(/^(left|up)/i.test(config.direction))? -config.heightorwidth : config.heightorwidth //set initial position of contents based on "direction"
 if (typeof config.remotecontent!="undefined" && config.remotecontent.length>0)
 featuredcontentglider.getremotecontent(config)
 else
 featuredcontentglider.setuptoggler(config)
 $(window).bind('unload', function(){ //clean up and persist
 config.$togglerdiv.unbind('click')
 config.$toc.unbind('click')
 config.$next.unbind('click')
 config.$prev.unbind('click')
 if (config.persiststate)
 featuredcontentglider.setCookie(config.gliderid, config.$togglerdiv.attr('lastselected'))
 config=null

 })
 })
 }
}