/**
    *
    *    Generates the Mental Module Which Slides the Featured Content On Homepage 
    *    Inherited From Dynamicdrive.com
    *    Added By: Chintan Kathiriya (5/27/2009)
    *    Available Init Options:
            id: "mantle",  //id of main slider DIV
            contentsource: ["inline", ""],  //Valid values: ["inline", ""] or ["ajax", "path_to_file"]
            toc: "markup",  //Valid values: "#increment", "markup", ["label1", "label2", etc]
            nextprev: ["Previous", "Next"],  //labels for "prev" and "next" links. Set to "" to hide.
            revealtype: "click", //Behavior of Pagination links to reveal the slides: "click" or "mouseover"
            enablefade: [true, 0.2],  //[true/false, fadedegree]
            autorotate: [true, 3000],  //[true/false, pausetime]
            onChange: function(previndex, curindex){  //event handler fired whenever script changes slide
                                                      //previndex holds index of last slide viewed b4 current (1=1st slide, 2nd=2nd etc)
                                                      //curindex holds index of currently shown slide (1=1st slide, 2nd=2nd etc)

**/

var featuredcontentslider={  
    //2 variables below you can customize if desired:    
    bustajaxcache: true, //bust caching of external ajax page after 1st request
    enablepersist: true, //persist to last content viewed when returning to page

    settingcaches: {}, //object to cache "setting" object of each script instance

    init:function(setting){
        var persistedpage=this.getCookie("fcspersist"+setting.id) || 1
        var urlselectedpage=this.urlparamselect(setting.id) //returns null or index from: mypage.htm?featuredcontentsliderid=index
        this.settingcaches[setting.id]=setting //cache "setting" object
        setting.contentdivs=[]
        setting.toclinks=[]
        setting.topzindex=0
        setting.currentpage=urlselectedpage || ((this.enablepersist)? persistedpage : 1)
        setting.prevpage=setting.currentpage
        setting.revealtype="on"+(setting.revealtype || "click")
        setting.curopacity=0
        setting.onChange=setting.onChange || function(){}
        if (setting.contentsource[0]=="inline")
            this.buildpaginate(setting) 
    },
    
    buildcontentdivs:function(setting){
        var alldivs=document.getElementById(setting.id).getElementsByTagName("div")
        for (var i=0; i<alldivs.length; i++){
            if (this.css(alldivs[i], "contentdiv", "check")){ //check for DIVs with class "contentdiv"
                setting.contentdivs.push(alldivs[i])
                    alldivs[i].style.display="none" //collapse all content DIVs to begin with
            }
        }
    },

    buildpaginate:function(setting){
        this.buildcontentdivs(setting)
        var sliderdiv=document.getElementById(setting.id)
        var pdiv=document.getElementById("paginate-"+setting.id)
        var phtml=""
        var toc=setting.toc
        var nextprev=setting.nextprev
        if (typeof toc=="string" && toc!="markup" || typeof toc=="object")
		{
            /*for (var i=1; i<=setting.contentdivs.length; i++)
			{
                phtml+='<a href="#'+i+'" class="toc">'+(typeof toc=="string"? toc.replace(/#increment/, i) : toc[i-1])+'</a> '
            }*/
			phtml+='<a href="#paus" class="paus">Pause</a> ';
            phtml=(nextprev[0]!=''? '<a href="#prev" class="prev">'+nextprev[0]+'</a> ' : '') + phtml + (nextprev[1]!=''? '<a href="#next" class="next">'+nextprev[1]+'</a>' : '')
			pdiv.innerHTML=phtml
        }
        var pdivlinks=pdiv.getElementsByTagName("a");
        var toclinkscount=0; //var to keep track of actual # of toc links
        for (var i=0; i<pdivlinks.length; i++)
		{
            if (this.css(pdivlinks[i], "toc", "check")){
                if (toclinkscount>setting.contentdivs.length-1)
				{ //if this toc link is out of range (user defined more toc links then there are contents)
                    pdivlinks[i].style.display="none"; //hide this toc link
                    continue;
                }
                pdivlinks[i].setAttribute("rel", ++toclinkscount) //store page number inside toc link
                pdivlinks[i][setting.revealtype]=function()
				{
                    featuredcontentslider.turnpage(setting, this.getAttribute("rel"))
                    return false
                }
                setting.toclinks.push(pdivlinks[i])
            }
            else if (this.css(pdivlinks[i], "prev", "check") || this.css(pdivlinks[i], "next", "check")){ //check for links with class "prev" or "next"
                pdivlinks[i].onclick=function(){
                    featuredcontentslider.turnpage(setting, this.className)
                    return false
                }
            }
			else if (this.css(pdivlinks[i], "paus", "check") )
			{ 
				pdivlinks[i].onclick=function(){
					if (this.innerHTML=="Pause")
					{
						this.innerHTML="Play";
                		featuredcontentslider.cleartimer(setting, window["fcsautorun"+setting.id])
					}
					else if (this.innerHTML=="Play")
					{
						this.innerHTML="Pause";
						featuredcontentslider.autorotate(setting);
					}
                    return false
                }
			}
         }
        this.turnpage(setting, setting.currentpage, true);
        if (setting.autorotate[0]) //if auto rotate enabled
		{ 
			pdiv[setting.revealtype]=function()
			{
                //featuredcontentslider.cleartimer(setting, window["fcsautorun"+setting.id])
            }
            sliderdiv["onclick"]=function()
			{ //stop content slider when slides themselves are clicked on
                //featuredcontentslider.cleartimer(setting, window["fcsautorun"+setting.id])
            }
            setting.autorotate[1]=setting.autorotate[1]+(1/setting.enablefade[1]*50) //add time to run fade animation (roughly) to delay between rotation
         this.autorotate(setting)
        }
    },

    urlparamselect:function(fcsid){
        var result=window.location.search.match(new RegExp(fcsid+"=(\\d+)", "i")) //check for "?featuredcontentsliderid=2" in URL
        return (result==null)? null : parseInt(RegExp.$1) //returns null or index, where index (int) is the selected tab's index
    },

    turnpage:function(setting, thepage, autocall){
        var currentpage=setting.currentpage //current page # before change
        var totalpages=setting.contentdivs.length
        var turntopage=(/prev/i.test(thepage))? currentpage-1 : (/next/i.test(thepage))? currentpage+1 : parseInt(thepage)
        turntopage=(turntopage<1)? totalpages : (turntopage>totalpages)? 1 : turntopage //test for out of bound and adjust
        if (turntopage==setting.currentpage && typeof autocall=="undefined") //if a pagination link is clicked on repeatedly
            return;
        setting.currentpage=turntopage
        setting.contentdivs[turntopage-1].style.zIndex=++setting.topzindex
        this.cleartimer(setting, window["fcsfade"+setting.id])
        setting.cacheprevpage=setting.prevpage
        if (setting.enablefade[0]==true){
            setting.curopacity=0
            this.fadeup(setting)
        }
        if (setting.enablefade[0]==false){ //if fade is disabled, fire onChange event immediately (verus after fade is complete)
            setting.contentdivs[setting.prevpage-1].style.display="none" //collapse last content div shown (it was set to "block")
            setting.onChange(setting.prevpage, setting.currentpage)
        }
        setting.contentdivs[turntopage-1].style.visibility="visible"
        setting.contentdivs[turntopage-1].style.display="block"
        if (setting.prevpage<=setting.toclinks.length) //make sure pagination link exists (may not if manually defined via "markup", and user omitted)
            this.css(setting.toclinks[setting.prevpage-1], "selected", "remove")
        if (turntopage<=setting.toclinks.length) //make sure pagination link exists (may not if manually defined via "markup", and user omitted)
            this.css(setting.toclinks[turntopage-1], "selected", "add")
        setting.prevpage=turntopage
        if (this.enablepersist)
            this.setCookie("fcspersist"+setting.id, turntopage)
    },

    setopacity:function(setting, value){ //Sets the opacity of targetobject based on the passed in value setting (0 to 1 and in between)
        var targetobject=setting.contentdivs[setting.currentpage-1]
        if (targetobject.filters && targetobject.filters[0]){ //IE syntax
            if (typeof targetobject.filters[0].opacity=="number") //IE6
                targetobject.filters[0].opacity=value*100
            else //IE 5.5
                targetobject.style.filter="alpha(opacity="+value*100+")"
        }
        else if (typeof targetobject.style.MozOpacity!="undefined") //Old Mozilla syntax
            targetobject.style.MozOpacity=value
        else if (typeof targetobject.style.opacity!="undefined") //Standard opacity syntax
            targetobject.style.opacity=value
        setting.curopacity=value
    },

    fadeup:function(setting){
        if (setting.curopacity<1){
            this.setopacity(setting, setting.curopacity+setting.enablefade[1])
            window["fcsfade"+setting.id]=setTimeout(function(){featuredcontentslider.fadeup(setting)}, 50)
        }
        else{ //when fade is complete
            if (setting.cacheprevpage!=setting.currentpage) //if previous content isn't the same as the current shown div (happens the first time the page loads/ script is run)
                setting.contentdivs[setting.cacheprevpage-1].style.display="none" //collapse last content div shown (it was set to "block")
            setting.onChange(setting.cacheprevpage, setting.currentpage)
        }
    },

    cleartimer:function(setting, timervar){
        if (typeof timervar!="undefined"){
            clearTimeout(timervar)
            clearInterval(timervar)
            if (setting.cacheprevpage!=setting.currentpage){ //if previous content isn't the same as the current shown div
                setting.contentdivs[setting.cacheprevpage-1].style.display="none"
            }
        }
    },

    css:function(el, targetclass, action){
        var needle=new RegExp("(^|\\s+)"+targetclass+"($|\\s+)", "ig")
        if (action=="check")
            return needle.test(el.className)
        else if (action=="remove")
            el.className=el.className.replace(needle, "")
        else if (action=="add")
            el.className+=" "+targetclass
    },

    autorotate:function(setting){
     window["fcsautorun"+setting.id]=setInterval(function(){featuredcontentslider.turnpage(setting, "next")}, setting.autorotate[1])
    },

    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

    }
}

	
function initMantle() 
{
	featuredcontentslider.init({
			id: "mantle",  //id of main slider DIV	
			contentsource: ["inline", ""],  //Valid values: ["inline", ""] or ["ajax", "path_to_file"]
			toc: "#increment",  //Valid values: "#increment", "markup", ["label1", "label2", etc]
			nextprev: ["<<", ">>"],  //labels for "prev" and "next" links. Set to "" to hide.
			revealtype: "click", //Behavior of pagination links to reveal the slides: "click" or "mouseover"
			enablefade: [true, 0.1],  //[true/false, fadedegree]
			autorotate: [true, 5000],  //[true/false, pausetime]
			onChange: function(previndex, curindex){  //event handler fired whenever script changes slide
					//previndex holds index of last slide viewed b4 current (1=1st slide, 2nd=2nd etc)
					//curindex holds index of currently shown slide (1=1st slide, 2nd=2nd etc)	
			}	
	})	
}