function getOs()
{
	var OsObject = "";
   if(navigator.userAgent.indexOf("MSIE")>0) {
		return "MSIE";
   }
   if(isFirefox=navigator.userAgent.indexOf("Firefox")>0){
		return "Firefox";
   }
   if(isSafari=navigator.userAgent.indexOf("Safari")>0) {
		return "Safari";
   } 
   if(isCamino=navigator.userAgent.indexOf("Camino")>0){
		return "Camino";
   }
   if(isMozilla=navigator.userAgent.indexOf("Gecko/")>0){
		return "Gecko";
   }
  
} 
 
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, //Fade degree for disabled nav buttons (0=completely transparent, 1=completely opaque)
 configholder: {},

 getCSSValue:function(val){ //Returns either 0 (if val contains 'auto') or val as an integer
 	return (val=="auto")? 0 : parseInt(val)
 },

 getremotepanels:function($, config){ //function to fetch external page containing the panel DIVs
 config.$belt.html(this.ajaxloadingmsg)
 $.ajax({
 url: config.contenttype[1], //path to external content
 async: true,
 error:function(ajaxrequest){
 config.$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) : 0
 },

 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
 },

 fadebuttons:function(config, currentpanel){
	 config.$leftnavbutton.fadeTo('fast', currentpanel==0? this.defaultbuttonsfade : 1);
	 config.$rightnavbutton.fadeTo('fast', currentpanel==config.lastvisiblepanel? this.defaultbuttonsfade : 1);
 },

 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:'Previous '}).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:'Next '}).appendTo('body');
	 
	 config.$leftnavbutton.bind('click', function(){ //assign nav button event handlers
		stepcarousel.stepBy(config.galleryid, -config.defaultbuttons.moveby);
	 });
	 
	 config.$rightnavbutton.bind('click', function(){ //assign nav button event handlers
	 	stepcarousel.stepBy(config.galleryid, config.defaultbuttons.moveby)
	 })
 if (config.panelbehavior.wraparound==false){ //if carousel viewer should stop at first or last panel (instead of wrap back or forth)
 this.fadebuttons(config, currentpanel)
 }
 return config.$leftnavbutton.add(config.$rightnavbutton)
 },

 stopautostep:function(config){
 clearTimeout(config.steptimer)
 clearTimeout(config.resumeautostep)
 },

 alignpanels:function($, config){
 var paneloffset=0
 config.paneloffsets=[paneloffset] //array to store upper left offset of each panel (1st element=0)
 config.panelwidths=[] //array to store widths of each panel
 config.$panels.each(function(index){ //loop through panels
 var $currentpanel=$(this)
 //$currentpanel.css({float: 'none', position: 'absolute', left: paneloffset+'px'}) //position panel
 $currentpanel.bind('click', function(e){return config.onpanelclick(e.target)}) //bind onpanelclick() to onclick event
 paneloffset+=stepcarousel.getCSSValue($currentpanel.css('marginRight')) + parseInt($currentpanel.get(0).offsetWidth || $currentpanel.css('width')) //calculate next panel offset
 config.paneloffsets.push(paneloffset) //remember this offset
 config.panelwidths.push(paneloffset-config.paneloffsets[config.paneloffsets.length-2]) //remember panel width
 })
 config.paneloffsets.pop() //delete last offset (redundant)
 var addpanelwidths=0
 var lastpanelindex=config.$panels.length-1
 config.lastvisiblepanel=lastpanelindex
 for (var i=config.$panels.length-1; i>=0; i--){
 addpanelwidths+=(i==lastpanelindex? config.panelwidths[lastpanelindex] : config.paneloffsets[i+1]-config.paneloffsets[i])
 if (config.gallerywidth>addpanelwidths){
 config.lastvisiblepanel=i //calculate index of panel that when in 1st position reveals the very last panel all at once based on gallery width
 }
 }
 config.$belt.css({width: paneloffset+'px'}) //Set Belt DIV to total panels' widths
 
 if(getOs()=="MSIE"){
	config.$belt.css({top: 10+'px'}) //IE Fixed
 }
 
 config.currentpanel=(config.panelbehavior.persist)? parseInt(this.getCookie(window[config.galleryid+"persist"])) : 0 //determine 1st panel to show by default
 config.currentpanel=(typeof config.currentpanel=="number" && config.currentpanel<config.$panels.length)? config.currentpanel : 0
 if (config.currentpanel!=0){
 var endpoint=config.paneloffsets[config.currentpanel]+(config.currentpanel==0? 0 : config.beltoffset)
 config.$belt.css({left: -endpoint+'px'})
 }
 if (config.defaultbuttons.enable==true){ //if enable default back/forth nav buttons
 var $navbuttons=this.addnavbuttons(config, config.currentpanel)
 $(window).bind("load resize", function(){ //refresh position of nav buttons when page loads/resizes, in case offsets weren't available document.oncontentload
 config.offsets={left:stepcarousel.getoffset(config.$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){ //enable auto stepping of Carousel?
 var $carouselparts=config.$gallery.add(typeof $navbuttons!="undefined"? $navbuttons : null)
 $carouselparts.bind('click', function(){
 stepcarousel.stopautostep(config)
 config.autostep.status="stopped"
 })
 $carouselparts.hover(function(){ //onMouseover
 stepcarousel.stopautostep(config)
 config.autostep.hoverstate="over"
 }, function(){ //onMouseout
 if (config.steptimer && config.autostep.hoverstate=="over" && config.autostep.status!="stopped"){
 config.resumeautostep=setTimeout(function(){
 stepcarousel.autorotate(config.galleryid)
 config.autostep.hoverstate="out"
 }, 500)
 }
 })
 
	 config.steptimer=setTimeout(function(){
		stepcarousel.autorotate(config.galleryid)}, config.autostep.pause) //automatically rotate Carousel Viewer
	 } //end enable auto stepping check
	 this.statusreport(config.galleryid)
	 config.oninit()
	 config.onslideaction(this)
   },

	 stepTo:function(galleryid, pindex){ /*User entered pindex starts at 1 for intuitiveness. Internally pindex still starts at 0 */
		 var config=stepcarousel.configholder[galleryid]
		 if (typeof config=="undefined"){
			 alert("There's an error with your set up of Carousel Viewer \""+galleryid+ "\"!")
			 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){ //if carousel viewer should stop at first or last panel (instead of wrap back or forth)
		 	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 if defined indicates stepBy() is being called automatically
	 var config=stepcarousel.configholder[galleryid]
	 if (typeof config=="undefined"){
	 alert("There's an error with your set up of Carousel Viewer \""+galleryid+ "\"!")
	 return
	 }
	 stepcarousel.stopautostep(config)
	 var direction=(steps>0)? 'forward' : 'back' //If "steps" is negative, that means backwards
	 var pindex=config.currentpanel+steps //index of panel to stop at
	 if (config.panelbehavior.wraparound==false){ //if carousel viewer should stop at first or last panel (instead of wrap back or forth)
	 pindex=(direction=="back" && pindex<=0)? 0 : (direction=="forward")? Math.min(pindex, config.lastvisiblepanel) : pindex
	 if (config.defaultbuttons.enable==true){ //if default nav buttons are enabled, fade them in and out depending on if at start or end of carousel
	 stepcarousel.fadebuttons(config, pindex)
	 }
	 }
	 else{ //else, for normal stepBy behavior
	 if (pindex>config.lastvisiblepanel && direction=="forward"){
	 //if destination pindex is greater than last visible panel, yet we're currently not at the end of the carousel yet
	 pindex=(config.currentpanel<config.lastvisiblepanel)? config.lastvisiblepanel : 0
	 }
	 else if (pindex<0 && direction=="back"){
	 //if destination pindex is less than 0, yet we're currently not at the beginning of the carousel yet
	 pindex=(config.currentpanel>0)? 0 : config.lastvisiblepanel /*wrap around left*/
	 }
	 }
	 var endpoint=config.paneloffsets[pindex]+(pindex==0? 0 : config.beltoffset) //left distance for Belt DIV to travel to
	 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];
	 if (config.$gallery.attr('_ismouseover')!="yes"){
		this.stepBy(galleryid, config.autostep.moveby);
	 }

	 config.steptimer=setTimeout(function(){stepcarousel.autorotate(galleryid)}, config.autostep.pause);
 },

 statusreport:function(galleryid){
	 var config=stepcarousel.configholder[galleryid]
	 var startpoint=config.currentpanel //index of first visible panel
	 var visiblewidth=0
	 for (var endpoint=startpoint; endpoint<config.paneloffsets.length; endpoint++){ //index (endpoint) of last visible panel
	 	visiblewidth+=config.panelwidths[endpoint];
		if (visiblewidth>config.gallerywidth){
			break;
		}
	 }
	 startpoint+=1 //format startpoint for user friendiness
	 endpoint=(endpoint+1==startpoint)? startpoint : endpoint //If only one image visible on the screen and partially hidden, set endpoint to startpoint
	 var valuearray=[startpoint, endpoint, config.panelwidths.length]
	 for (var i=0; i<config.statusvars.length; i++){
	 window[config.statusvars[i]]=valuearray[i] //Define variable (with user specified name) and set to one of the status values
	 config.$statusobjs[i].text(valuearray[i]+" ") //Populate element on page with ID="user specified name" with one of the status values
	 }
 },

 setup:function(config){
	 //Disable Step Gallery scrollbars ASAP dynamically (enabled for sake of users with JS disabled)
	 document.write('<style type="text/css">\n#'+config.galleryid+'{overflow: hidden;}\n</style>')
	 jQuery(document).ready(function($){
	 config.$gallery=$('#'+config.galleryid)
	 config.gallerywidth=config.$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) //Find Belt DIV that contains all the panels
	 config.$panels=config.$gallery.find('.'+config.panelclass) //Find Panel DIVs that each contain a slide
	 config.panelbehavior.wraparound=(config.autostep && config.autostep.enable)? true : config.panelbehavior.wraparound //if auto step enabled, set "wraparound" to true
	 config.onpanelclick=(typeof config.onpanelclick=="undefined")? function(target){} : config.onpanelclick //attach custom "onpanelclick" event handler
	 config.onslideaction=(typeof config.onslide=="undefined")? function(){} : function(beltobj){$(beltobj).stop(); config.onslide()} //attach custom "onslide" event handler
	 config.oninit=(typeof config.oninit=="undefined")? function(){} : config.oninit //attach custom "oninit" event handler
	 config.beltoffset=stepcarousel.getCSSValue(config.$belt.css('marginLeft')) //Find length of Belt DIV's left margin
	 config.statusvars=config.statusvars || [] //get variable names that will hold "start", "end", and "total" slides info
	 config.$statusobjs=[$('#'+config.statusvars[0]), $('#'+config.statusvars[1]), $('#'+config.statusvars[2])]
	 config.currentpanel=0
	 stepcarousel.configholder[config.galleryid]=config //store config parameter as a variable
	 if (config.contenttype[0]=="ajax" && typeof config.contenttype[1]!="undefined") //fetch ajax content?
	 stepcarousel.getremotepanels($, config)
	 else
	 stepcarousel.alignpanels($, config) //align panels and initialize gallery
	 }) //end document.ready
	 jQuery(window).bind('unload', function(){ //clean up
	 if (config.panelbehavior.persist){
	 stepcarousel.setCookie(window[config.galleryid+"persist"], config.currentpanel)
	 }
	 jQuery.each(config, function(ai, oi){
	 oi=null
	 })
	 config=null
	 })
	}
}