//** Step Carousel Viewer- (c) Dynamic Drive DHTML code library: http://www.dynamicdrive.com
//** Script Download/ http://www.dynamicdrive.com/dynamicindex4/stepcarousel.htm
//** Usage Terms: http://www.dynamicdrive.com/notice.htm
//** Current version (Sept 29th, 09'): 1.8 See http://www.dynamicdrive.com/dynamicindex4/stepcarouselchangelog.txt for details
jQuery.noConflict();
var stepcarousel={
	ajaxloadingmsg: '<div style="margin: 1em; font-weight: bold"><img src="ajaxloadr.gif" style="vertical-align: middle" /> Fetching Content. Please wait...</div>', //customize HTML to show while fetching Ajax content
	defaultbuttonsfade: 0.4,
	configholder: {},
	getCSSValue:function(val){
		return (val=="auto")? 0 : parseInt(val)
	},
	getremotepanels:function($, config){
		config.$belt.html(this.ajaxloadingmsg)
		$.ajax({
			url: config.contenttype[1],
			async: true,
			error:function(ajaxrequest){
				config.$belt.html('Error fetching content.<br />Server Response: '+ajaxrequest.responseText)
			},
			success:function(content){
				config.$belt.html(content)
				config.$panels=config.$gallery.find('.'+config.panelclass)
				stepcarousel.alignpanels($, config)
			}
		})
	},
	getoffset:function(what, offsettype){
		return (what.offsetParent)? what[offsettype]+this.getoffset(what.offsetParent, offsettype) : what[offsettype]
	},
	getCookie:function(Name){ 
		//var re=new RegExp(Name+"=[^;]+", "i");
		//if (document.cookie.match(re)){return document.cookie.match(re)[0].split("=")[1]}
		return null
	},
	setCookie:function(name, value){
		//document.cookie = name+"="+value
	},
	fadebuttons:function(config, currentpanel){
		config.$leftnavbutton.fadeTo('fast', currentpanel==0? this.defaultbuttonsfade : 1)
		config.$rightnavbutton.fadeTo('fast', currentpanel==config.lastvisiblepanel? this.defaultbuttonsfade : 1)
		if (currentpanel==config.lastvisiblepanel){stepcarousel.stopautostep(config)}
	},
	addnavbuttons:function($, config, currentpanel){
		config.$leftnavbutton=$('<img src="'+config.defaultbuttons.leftnav[0]+'">').css({zIndex:50, position:'absolute', left:config.offsets.left+config.defaultbuttons.leftnav[1]+'px', top:config.offsets.top+config.defaultbuttons.leftnav[2]+'px', cursor:'hand', cursor:'pointer'}).attr({title:'Anterior'}).appendTo('body')
		config.$rightnavbutton=$('<img src="'+config.defaultbuttons.rightnav[0]+'">').css({zIndex:50, position:'absolute', left:config.offsets.left+config.$gallery.get(0).offsetWidth+config.defaultbuttons.rightnav[1]+'px', top:config.offsets.top+config.defaultbuttons.rightnav[2]+'px', cursor:'hand', cursor:'pointer'}).attr({title:'Próximo'}).appendTo('body')
		config.$leftnavbutton.bind('click', function(){
			stepcarousel.stepBy(config.galleryid, -config.defaultbuttons.moveby)
		})
		config.$rightnavbutton.bind('click', function(){
			stepcarousel.stepBy(config.galleryid, config.defaultbuttons.moveby)
		})
		if (config.panelbehavior.wraparound==false){this.fadebuttons(config, currentpanel)}
		return config.$leftnavbutton.add(config.$rightnavbutton)
	},
	alignpanels:function($, config){
		var paneloffset=0
		config.paneloffsets=[paneloffset]
		config.panelwidths=[]
		config.$panels.each(function(index){
			var $currentpanel=$(this)
			$currentpanel.css({float: 'none', position: 'absolute', left: paneloffset+'px'})
			$currentpanel.bind('click', function(e){return config.onpanelclick(e.target)})
			paneloffset+=stepcarousel.getCSSValue($currentpanel.css('marginRight')) + parseInt($currentpanel.get(0).offsetWidth || $currentpanel.css('width')) //calculate next panel offset
			config.paneloffsets.push(paneloffset)
			config.panelwidths.push(paneloffset-config.paneloffsets[config.paneloffsets.length-2])
		})
		config.paneloffsets.pop()
		var addpanelwidths=0
		var lastpanelindex=config.$panels.length-1
		config.lastvisiblepanel=lastpanelindex
		for (var i=config.$panels.length-1; i>=0; i--){
			addpanelwidths+=(i==lastpanelindex? config.panelwidths[lastpanelindex] : config.paneloffsets[i+1]-config.paneloffsets[i])
			if (config.gallerywidth>addpanelwidths){
				config.lastvisiblepanel=i
			}
		}
		config.$belt.css({width: paneloffset+'px'})
		config.currentpanel=(config.panelbehavior.persist)? parseInt(this.getCookie(config.galleryid+"persist")) : 0
		config.currentpanel=(typeof config.currentpanel=="number" && config.currentpanel<config.$panels.length)? config.currentpanel : 0
		var endpoint=config.paneloffsets[config.currentpanel]+(config.currentpanel==0? 0 : config.beltoffset)
		config.$belt.css({left: -endpoint+'px'})
		if (config.defaultbuttons.enable==true){
			var $navbuttons=this.addnavbuttons($, config, config.currentpanel)
			$(window).bind("load resize", function(){
				config.offsets={left:stepcarousel.getoffset(config.$gallery.get(0), "offsetLeft"), top:stepcarousel.getoffset(config.$gallery.get(0), "offsetTop")}
				config.$leftnavbutton.css({left:config.offsets.left+config.defaultbuttons.leftnav[1]+'px', top:config.offsets.top+config.defaultbuttons.leftnav[2]+'px'})
				config.$rightnavbutton.css({left:config.offsets.left+config.$gallery.get(0).offsetWidth+config.defaultbuttons.rightnav[1]+'px', top:config.offsets.top+config.defaultbuttons.rightnav[2]+'px'})
			})
		}
		if (config.autostep && config.autostep.enable){
			var $carouselparts=config.$gallery.add(typeof $navbuttons!="undefined"? $navbuttons : null)
			$carouselparts.bind('click', function(){
				config.autostep.status="stopped"
				stepcarousel.stopautostep(config)
			})
			$carouselparts.hover(function(){
				stepcarousel.stopautostep(config)
				config.autostep.hoverstate="over"
			}, function(){
				if (config.steptimer && config.autostep.hoverstate=="over" && config.autostep.status!="stopped"){
					config.steptimer=setInterval(function(){stepcarousel.autorotate(config.galleryid)}, config.autostep.pause)
					config.autostep.hoverstate="out"
				}
			})
			config.steptimer=setInterval(function(){stepcarousel.autorotate(config.galleryid)}, config.autostep.pause)
		}
		this.createpaginate($, config)
		this.statusreport(config.galleryid)
		config.oninit()
		config.onslideaction(this)
	},
	stepTo:function(galleryid, pindex){
		var config=stepcarousel.configholder[galleryid]
		if (typeof config=="undefined"){return}
		stepcarousel.stopautostep(config)
		var pindex=Math.min(pindex-1, config.paneloffsets.length-1)
		var endpoint=config.paneloffsets[pindex]+(pindex==0? 0 : config.beltoffset)
		if (config.panelbehavior.wraparound==false && config.defaultbuttons.enable==true){this.fadebuttons(config, pindex)}
		config.$belt.animate({left: -endpoint+'px'}, config.panelbehavior.speed, function(){config.onslideaction(this)})
		config.currentpanel=pindex
		this.statusreport(galleryid)
	},
	stepBy:function(galleryid, steps, isauto){
		var config=stepcarousel.configholder[galleryid]
		if (typeof config=="undefined"){return}
		if (!isauto)
			stepcarousel.stopautostep(config)
		var direction=(steps>0)? 'forward' : 'back'
		var pindex=config.currentpanel+steps 
		if (config.panelbehavior.wraparound==false){ 
			pindex=(direction=="back" && pindex<=0)? 0 : (direction=="forward")? Math.min(pindex, config.lastvisiblepanel) : pindex
			if (config.defaultbuttons.enable==true){stepcarousel.fadebuttons(config, pindex)}	
		}
		else{
			if (pindex>config.lastvisiblepanel && direction=="forward"){pindex=(config.currentpanel<config.lastvisiblepanel)? config.lastvisiblepanel : 0}
			else if (pindex<0 && direction=="back"){pindex=(config.currentpanel>0)? 0 : config.lastvisiblepanel}
		}
		var endpoint=config.paneloffsets[pindex]+(pindex==0? 0 : config.beltoffset)
		if (pindex==0 && direction=='forward' || config.currentpanel==0 && direction=='back' && config.panelbehavior.wraparound==true){ //decide whether to apply "push pull" effect
			config.$belt.animate({left: -config.paneloffsets[config.currentpanel]-(direction=='forward'? 100 : -30)+'px'}, 'normal', function(){
				config.$belt.animate({left: -endpoint+'px'}, config.panelbehavior.speed, function(){config.onslideaction(this)})
			})
		}
		else
			config.$belt.animate({left: -endpoint+'px'}, config.panelbehavior.speed, function(){config.onslideaction(this)})
		config.currentpanel=pindex
		this.statusreport(galleryid)
	},
	autorotate:function(galleryid){
		var config=stepcarousel.configholder[galleryid]
		this.stepBy(galleryid, config.autostep.moveby, true)
	},
	stopautostep:function(config){
		clearTimeout(config.steptimer)
	},
	statusreport:function(galleryid){
		var config=stepcarousel.configholder[galleryid]
		if (config.statusvars.length==3){
			var startpoint=config.currentpanel
			var visiblewidth=0
			for (var endpoint=startpoint; endpoint<config.paneloffsets.length; endpoint++){
				visiblewidth+=config.panelwidths[endpoint]
				if (visiblewidth>config.gallerywidth){
					break
				}
			}
			startpoint+=1
			endpoint=(endpoint+1==startpoint)? startpoint : endpoint
			var valuearray=[startpoint, endpoint, config.panelwidths.length]
			for (var i=0; i<config.statusvars.length; i++){
				window[config.statusvars[i]]=valuearray[i]
				config.$statusobjs[i].text(valuearray[i]+" ")
			}
		}
		stepcarousel.selectpaginate(jQuery, galleryid)
	},
	createpaginate:function($, config){
		if (config.$paginatediv.length==1){
			var $templateimg=config.$paginatediv.find('img["data-over"]:eq(0)')
			var controlpoints=[], controlsrc=[], imgarray=[], moveby=$templateimg.attr("data-moveby") || 1
			var asize=(moveby==1? 0:1) + Math.floor((config.lastvisiblepanel+1) / moveby)
			var imghtml=$('<div>').append($templateimg.clone()).html()
			srcs=[$templateimg.attr('src'), $templateimg.attr('data-over'), $templateimg.attr('data-select')]
			for (var i=0; i<asize; i++){
				var moveto=Math.min(i*moveby, config.lastvisiblepanel)
				imgarray.push(imghtml.replace(/>$/, ' data-index="'+i+'" data-moveto="'+moveto+'" title="Move to Panel '+(moveto+1)+'">') +'\n')
				controlpoints.push(moveto)
			}
			var $controls=$('<span></span>').replaceAll($templateimg).append(imgarray.join('')).find('img')
			$controls.css({cursor:'pointer'})
			config.$paginatediv.bind('click', function(e){
				var $target=$(e.target)
				if ($target.is('img') && $target.attr('data-over')){
					stepcarousel.stepTo(config.galleryid, parseInt($target.attr('data-moveto'))+1)
				}
			})
			config.$paginatediv.bind('mouseover mouseout', function(e){
				var $target=$(e.target)
				if ($target.is('img') && $target.attr('data-over')){
					if (parseInt($target.attr('data-index')) != config.pageinfo.curselected)
						$target.attr('src', srcs[(e.type=="mouseover")? 1 : 0])
				}
			})
			config.pageinfo={controlpoints:controlpoints, $controls:$controls,  srcs:srcs, prevselected:null, curselected:null}
		}
	},	
	selectpaginate:function($, galleryid){
		var config=stepcarousel.configholder[galleryid]
		if (config.$paginatediv.length==1){
			for (var i=0; i<config.pageinfo.controlpoints.length; i++){
				if (config.pageinfo.controlpoints[i] <= config.currentpanel) config.pageinfo.curselected=i
			}
			if (typeof config.pageinfo.prevselected!=null) 
				config.pageinfo.$controls.eq(config.pageinfo.prevselected).attr('src', config.pageinfo.srcs[0])
			config.pageinfo.$controls.eq(config.pageinfo.curselected).attr('src', config.pageinfo.srcs[2]) 
			config.pageinfo.prevselected=config.pageinfo.curselected 
		}
	},
	loadcontent:function(galleryid, url){
		var config=stepcarousel.configholder[galleryid]
		config.contenttype=['ajax', url]
		stepcarousel.stopautostep(config)
		stepcarousel.resetsettings($, config)
		stepcarousel.init(jQuery, config)

	},
	init:function($, config){
		config.gallerywidth=config.$gallery.width()
		config.offsets={left:stepcarousel.getoffset(config.$gallery.get(0), "offsetLeft"), top:stepcarousel.getoffset(config.$gallery.get(0), "offsetTop")}
		config.$belt=config.$gallery.find('.'+config.beltclass) 
		config.$panels=config.$gallery.find('.'+config.panelclass) 
		config.$paginatediv=$('#'+config.galleryid+'-paginate')
		if (config.autostep)
			config.autostep.pause+=config.panelbehavior.speed
		config.onpanelclick=(typeof config.onpanelclick=="undefined")? function(target){} : config.onpanelclick //attach custom "onpanelclick" event handler
		config.onslideaction=(typeof config.onslide=="undefined")? function(){} : function(beltobj){$(beltobj).stop(); config.onslide()} //attach custom "onslide" event handler
		config.oninit=(typeof config.oninit=="undefined")? function(){} : config.oninit
		config.beltoffset=stepcarousel.getCSSValue(config.$belt.css('marginLeft'))
		config.statusvars=config.statusvars || []
		config.$statusobjs=[$('#'+config.statusvars[0]), $('#'+config.statusvars[1]), $('#'+config.statusvars[2])]
		config.currentpanel=0
		stepcarousel.configholder[config.galleryid]=config
		if (config.contenttype[0]=="ajax" && typeof config.contenttype[1]!="undefined")
			stepcarousel.getremotepanels($, config)
		else
			stepcarousel.alignpanels($, config)
	},
	resetsettings:function($, config){
		config.$gallery.unbind()
		config.$belt.stop()
		config.$panels.remove()
		if (config.$leftnavbutton){
			config.$leftnavbutton.remove()
			config.$rightnavbutton.remove()
		}
		if (config.$paginatediv.length==1){
			config.$paginatediv.unbind()
			config.pageinfo.$controls.eq(0).attr('src', config.pageinfo.srcs[0]).removeAttr('data-index').removeAttr('data-moveto').removeAttr('title') //reset first pagination link so it acts as template again
			.end().slice(1).remove()
		}
		if (config.autostep)
			config.autostep.status=null
		if (config.panelbehavior.persist){
			//stepcarousel.setCookie(window[config.galleryid+"persist"], 0) //set initial panel to 0, overridden w/ current panel if window.unload is invoked
		}
	},
	setup:function(config){
		document.write('<style type="text/css">\n#'+config.galleryid+'{overflow: hidden;}\n</style>')
		jQuery(document).ready(function($){
			config.$gallery=$('#'+config.galleryid)
			stepcarousel.init($, config)
		})
		jQuery(window).bind('unload', function(){
			stepcarousel.resetsettings($, config)
			if (config.panelbehavior.persist){
				//stepcarousel.setCookie(config.galleryid+"persist", config.currentpanel)
				}
			jQuery.each(config, function(ai, oi){
				oi=null
			})
			config=null
		})
	}
}