//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.find('.toc')


			config.$next=config.$togglerdiv.find('.next')


			config.$prev=config.$togglerdiv.find('.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


				


			})


		})


	}


}