// JavaScript Document

//** Featured Content Slider script- © Dynamic Drive DHTML code library (http://www.dynamicdrive.com)
//** Last updated: Feb 28th- 07- Added ability to customize pagination links' text

////Ajax related settings
var csbustcachevar=0 //bust potential caching of external pages after initial Ajax request? (1=yes, 0=no)
var csloadstatustext="<img src='/escreener-web/images/indicator.gif' /> Requesting content..." //HTML to indicate Ajax page is being fetched
var csexternalfiles=[] //External .css or .js files to load to style the external content(s), if any. Separate multiple files with comma ie: ["cat.css", dog.js"]

////NO NEED TO EDIT BELOW////////////////////////
var enablepersist=false  // Set this to have cookie set start tab for user.
var slidernodes=new Object() //Object array to store references to each content slider's DIV containers (<div class="contentdiv">)
var csloadedobjects="" //Variable to store file names of .js/.css files already loaded (if Ajax is used)
var autoOn = true;

function ContentSlider(sliderid, autorun, customPaginateText, customNextText){
	var slider=document.getElementById(sliderid)
	if (typeof customPaginateText!="undefined" && customPaginateText!="") //Custom array of pagination links text defined?
		slider.paginateText=customPaginateText
	if (typeof customNextText!="undefined" && customNextText!="") //Custom HTML for "Next" link defined?
		slider.nextText=customNextText
	slidernodes[sliderid]=[] //Array to store references to this content slider's DIV containers (<div class="contentdiv">)
	ContentSlider.loadobjects(csexternalfiles) //Load external .js and .css files, if any
	var alldivs=slider.getElementsByTagName("div")
	for (var i=0; i<alldivs.length; i++){
		if (alldivs[i].className=="contentdiv"){
			//alert("hi swap "+alldivs[i])
			slidernodes[sliderid].push(alldivs[i]) //add this DIV reference to array
			if (typeof alldivs[i].getAttribute("rel")=="string")
			{
				//alert("hi sud "+alldivs[i].getAttribute("rel"))
				//If get this DIV's content via Ajax (rel attr contains path to external page)
				ContentSlider.ajaxpage(alldivs[i].getAttribute("rel"), alldivs[i])
			}
		}
	}
	
	ContentSlider.buildpagination(sliderid)
	var loadfirstcontent=true
	if (enablepersist && getCookie(sliderid)!=""){ //if enablepersist is true and cookie contains corresponding value for slider
		var cookieval=getCookie(sliderid).split(":") //process cookie value ([sliderid, int_pagenumber (div content to jump to)]
		if (document.getElementById(cookieval[0])!=null && typeof slidernodes[sliderid][cookieval[1]]!="undefined"){ //check cookie value for validity
			ContentSlider.turnpage(cookieval[0], parseInt(cookieval[1])) //restore content slider's last shown DIV
			loadfirstcontent=false
		}
	}
	if (loadfirstcontent==true) //if enablepersist is false, or cookie value doesn't contain valid value for some reason (ie: user modified the structure of the HTML)
		ContentSlider.turnpage(sliderid, 0) //Display first DIV within slider
	if (typeof autorun=="number" && autorun>0) { //if autorun parameter (int_miliseconds) is defined, fire auto run sequence
		window[sliderid+"timer"]=setTimeout(function(){ContentSlider.autoturnpage(sliderid, autorun)}, autorun);
            var btn = document.getElementById("rotateBTN");
            btn.innerHTML = "<img src='/escreener-web/images/i-22-pause.gif' align='top' />";
            btn.className = "autoRotateOn";
      }

}

ContentSlider.buildpagination=function(sliderid){
	var slider=document.getElementById(sliderid)
	var paginatediv=document.getElementById("paginate-"+sliderid) //reference corresponding pagination DIV for slider
	var pcontent=""
      pcontent += "<div class='auto' style='float:right;'><a href=";
      pcontent += '"javascript:startAutoRotate(';
      pcontent += "'slider1', 10000);";
      pcontent += '" ';
      pcontent += 'id="rotateBTN" style="border-width:0px; padding-right:5px;">Auto Rotate</a></div><div>';
     for (var i=0; i<slidernodes[sliderid].length; i++) //For each DIV within slider, generate a pagination link
	        pcontent+='<a href="javascript:startAutoRotate(\'' + sliderid + '\', 10000);" onClick=\"ContentSlider.turnpage(\''+sliderid+'\', '+i+', false); return false\">'+(slider.paginateText? slider.paginateText[i] : i+1)+'</a>'
	        pcontent += "</div>";

	paginatediv.innerHTML=pcontent
	paginatediv.onclick=function(){ //cancel auto run sequence (if defined) when user clicks on pagination DIV
	if (typeof window[sliderid+"timer"]!="undefined")
		clearTimeout(window[sliderid+"timer"])
	}

           var btn = document.getElementById("rotateBTN");
           btn.className = "autoRotateOn";
           btn.innerHTML = "<img src='/escreener-web/images/i-22-pause.gif' align='absmiddle'/>";

}

ContentSlider.turnpage=function(sliderid, thepage, autoRotate){
	var contentlinks = document.getElementById("paginate-"+sliderid).getElementsByTagName("a") 
	
    var paginatelinks= new Array();
    var j= 0;
    for (var i=0; i<contentlinks.length; i++){
		if (contentlinks[i].id!="rotateBTN"){
        paginatelinks[j] =contentlinks[i]; j=j+1;
        }
     }
     	
	for (var i=0; i<slidernodes[sliderid].length; i++){ //For each DIV within slider
		paginatelinks[i].className="" //empty corresponding pagination link's class name
		slidernodes[sliderid][i].style.display="none" //hide DIV
	}
	
	paginatelinks[thepage].className="selected" //for selected DIV, set corresponding pagination link's class name
	slidernodes[sliderid][thepage].style.display="block" //show selected DIV
	//Set "Next" pagination link's (last link within pagination DIV) "rel" attribute to the next DIV number to show
	paginatelinks[paginatelinks.length-1].setAttribute("rel", thenextpage=(thepage<paginatelinks.length-1)? thepage+1 : 0)

      if (! autoRotate) {
        var btn = document.getElementById("rotateBTN");
        btn.className = "autoRotateOff";
        btn.innerHTML = "<img src='/escreener-web/images/i-22-play.gif' height='16px' align='absmiddle'/>";
        autoOn = false;
      } 

	if (enablepersist)
		setCookie(sliderid, sliderid+":"+thepage)
}

ContentSlider.autoturnpage=function(sliderid, autorunperiod){

    var contentlinks = document.getElementById("paginate-"+sliderid).getElementsByTagName("a") 
	
    var paginatelinks= new Array();
    var j= 0;
    for (var i=0; i<contentlinks.length; i++){
		if (contentlinks[i].id!="rotateBTN"){
        paginatelinks[j] =contentlinks[i]; j=j+1;
        }
     }
	
	var nextpagenumber=parseInt(paginatelinks[paginatelinks.length-1].getAttribute("rel")) //Get page number of next DIV to show
      /*if (nextpagenumber > 4) {
          nextpagenumber = 0;
      }*/
	ContentSlider.turnpage(sliderid, nextpagenumber, true) //Show that DIV
	window[sliderid+"timer"]=setTimeout(function(){ContentSlider.autoturnpage(sliderid, autorunperiod)}, autorunperiod)
}

function getCookie(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 ""
}

function setCookie(name, value){
	document.cookie = name+"="+value
}

function startAutoRotate (sliderid, autorun) {
  var btn = document.getElementById("rotateBTN");
  
  if (! autoOn) {
   window[sliderid+"timer"]=setTimeout(function(){ContentSlider.autoturnpage(sliderid, autorun)}, autorun);
   btn.className = "autoRotateOn";
   btn.innerHTML = "<img src='/escreener-web/images/i-22-pause.gif' align='absmiddle'/>";
   autoOn = true;
  } else {
   clearTimeout(window[sliderid+"timer"]);
   btn.className = "autoRotateOff";
   btn.innerHTML = "<img src='/escreener-web/images/i-22-play.gif' height='16px' align='absmiddle'/>";
   autoOn = false;
  }
}  


////////////////Ajax Related functions //////////////////////////////////

ContentSlider.ajaxpage=function(url, thediv){
	var page_request = false
	var bustcacheparameter=""
	if (window.XMLHttpRequest) // if Mozilla, Safari etc
		page_request = new XMLHttpRequest()
	else if (window.ActiveXObject){ // if IE
		try {
		page_request = new ActiveXObject("Msxml2.XMLHTTP")
		} 
		catch (e){
		try{
		page_request = new ActiveXObject("Microsoft.XMLHTTP")
		}
		catch (e){}
		}
	}
	else
		return false
	thediv.innerHTML=csloadstatustext
	page_request.onreadystatechange=function(){
		ContentSlider.loadpage(page_request, thediv)
	}
	if (csbustcachevar) //if bust caching of external page
		bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
	page_request.open('GET', url+bustcacheparameter, true)
	page_request.send(null)
}

ContentSlider.loadpage=function(page_request, thediv){
	if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
		thediv.innerHTML=page_request.responseText
}

ContentSlider.loadobjects=function(externalfiles){ //function to load external .js and .css files. Parameter accepts a list of external files to load (array)
	for (var i=0; i<externalfiles.length; i++){
		var file=externalfiles[i]
		var fileref=""
		if (csloadedobjects.indexOf(file)==-1){ //Check to see if this object has not already been added to page before proceeding
			if (file.indexOf(".js")!=-1){ //If object is a js file
				fileref=document.createElement('script')
				fileref.setAttribute("type","text/javascript");
				fileref.setAttribute("src", file);
			}
			else if (file.indexOf(".css")!=-1){ //If object is a css file
				fileref=document.createElement("link")
				fileref.setAttribute("rel", "stylesheet");
				fileref.setAttribute("type", "text/css");
				fileref.setAttribute("href", file);
			}
		}
		if (fileref!=""){
			document.getElementsByTagName("head").item(0).appendChild(fileref)
			csloadedobjects+=file+" " //Remember this object as being already added to page
		}
	}
}