//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 $jx = jQuery.noConflict(); 

var featuredcontentglider={

	csszindex: 100,

	ajaxloadingmsg: '<b>Fetching Content. Please wait...</b>',

	glide:function(config, showpage, isprev){

		var selected=parseInt(showpage)

		if (selected>=config.$jxcontentdivs.length){ //if no content exists at this index position

			alert("No content exists at page "+(selected+1)+"! Loading 1st page instead.")

			selected=0

		}

		var $jxtarget=config.$jxcontentdivs.eq(selected)

		//Test for toggler not being initialized yet, or user clicks on the currently selected page):

		if (config.$jxtogglerdiv.attr('lastselected')==null || parseInt(config.$jxtogglerdiv.attr('lastselected'))!=selected){

			var $jxselectedlink=config.$jxtoc.eq(selected)

			config.$jxnext.attr('loadpage', (selected<config.$jxcontentdivs.length-1)? selected+1+'pg' : 0+'pg')

			config.$jxprev.attr('loadpage', (selected==0)? config.$jxcontentdivs.length-1+'pg' : selected-1+'pg')

			var startpoint=(isprev=="previous")? -config.startpoint : config.startpoint

			$jxtarget.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

			$jxtarget.animate(endpoint, config.speed)

			config.$jxtoc.removeClass('selected')

			$jxselectedlink.addClass('selected')

			config.$jxtogglerdiv.attr('lastselected', selected+'pg')

		}

	},



	getremotecontent:function(config){

		config.$jxglider.html(this.ajaxloadingmsg)

		$jx.ajax({

			url: config.remotecontent,

			error:function(ajaxrequest){

				config.$jxglider.html('Error fetching content.<br />Server Response: '+ajaxrequest.responseText)

			},

			success:function(content){

				config.$jxglider.html(content)

				featuredcontentglider.setuptoggler(config)

			}

		})

	},



	aligncontents:function(config){

		config.$jxcontentdivs=$jx("#"+config.gliderid+" ."+config.contentclass)

		config.$jxcontentdivs.css(config.leftortop, config.startpoint).css({height: config.$jxglider.height(), visibility: 'visible'}) //position content divs so they're out of view:

	},



	setuptoggler:function(config){

		this.aligncontents(config)

		config.$jxtogglerdiv.hide()

		config.$jxtoc.each(function(index){

				$jx(this).attr('pagenumber', index+'pg')

				if (index > (config.$jxcontentdivs.length-1))

					$jx(this).css({display: 'none'}) //hide redundant "toc" links

		})

		var $jxnextandprev=$jx("#"+config.togglerid+" .next, #"+config.togglerid+" .prev")

		$jxnextandprev.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.$jxtoc.click(function(event){ //Assign click behavior to 'toc' links

			featuredcontentglider.glide(config, this.getAttribute('pagenumber'))

			event.preventDefault()

		})

		config.$jxtogglerdiv.fadeIn(1000, function(){

			featuredcontentglider.glide(config, config.selected)

			if (config.autorotate==true){ //auto rotate contents?

				config.stepcount=0 //set steps taken

				config.totalsteps=config.$jxcontentdivs.length*config.autorotateconfig[1] //Total steps limit: num of contents x num of user specified cycles)

				featuredcontentglider.autorotate(config)

			}

		})

		config.$jxtogglerdiv.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.$jxnext.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){

		$jx(document).ready(function(){

			config.$jxglider=$jx("#"+config.gliderid)

			config.$jxtogglerdiv=$jx("#"+config.togglerid)

			config.$jxtoc=config.$jxtogglerdiv.children('.toc')

			config.$jxnext=config.$jxtogglerdiv.children('.next')

			config.$jxprev=config.$jxtogglerdiv.children('.prev')

			config.$jxprev.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.$jxglider.height() : config.$jxglider.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)

			$jx(window).bind('unload', function(){ //clean up and persist

				config.$jxtogglerdiv.unbind('click')

				config.$jxtoc.unbind('click')

				config.$jxnext.unbind('click')

				config.$jxprev.unbind('click')

				if (config.persiststate)

					featuredcontentglider.setCookie(config.gliderid, config.$jxtogglerdiv.attr('lastselected'))

				config=null

				

			})

		})

	}

}