var slideshow_count;
var slideshow_interval;
var old_item = 0;
var current_item = 0;

function slideShow(container) {
  var selectedID = new Querystring().params["item"];
  var container = container
  slideshow_count = 4;
  slideshow_interval = setInterval(rotate,5000);
  
  $("#photos").hover(function() {
   clearInterval(slideshow_interval);
  }, function() {
   slideshow_interval = setInterval(rotate,5000); //time in milliseconds
   //rotate();
  });
  
  if (selectedID != undefined) {
    var selected = "#item_"+selectedID;
    var selectedContent = "#item_"+selectedID+"-content";
    container.find(selected).addClass("selected");
    $(selectedContent).addClass("active");
  } else {
    container.find(".item:first").addClass("selected");
    $(".item-content:first").addClass("active");
  }
  
  container.find(".item").click(function() {
	  var item = this
	  $(".item").removeClass("selected");
	  $(item).addClass("selected");
	  
	  //$(".tab-content").removeClass("active");
	  $(".item-content").hide();
	  var id = $(item).attr("id");
	  //$("#"+id+"-content").addClass("active");
	  $("#"+id+"-content").fadeIn("slow");
	  
	  return false;
	});
}

function rotate() {
  current_item = (old_item + 1) % slideshow_count; 
  var item = $("#item_"+current_item);
  
  $(".item").removeClass("selected");
  $(item).addClass("selected");
	  
  $(".item-content").hide();
  var id = $(item).attr("id");
  $("#"+id+"-content").fadeIn("slow");
  old_item = current_item;
}

/* Client-side access to querystring name=value pairs Version 1.3 v28 May 2008
	License (Simplified BSD):http://adamv.com/dev/javascript/qslicense.txt
*/
function Querystring(qs) { // optionally pass a querystring to parse
	this.params = {};
	
	if (qs == null) qs = location.search.substring(1, location.search.length);
	if (qs.length == 0) return;

// Turn <plus> back to <space>
// See: http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.13.4.1
	qs = qs.replace(/\+/g, ' ');
	var args = qs.split('&'); // parse out name/value pairs separated via &
	
// split out each name=value pair
	for (var i = 0; i < args.length; i++) {
		var pair = args[i].split('=');
		var name = decodeURIComponent(pair[0]);
		
		var value = (pair.length==2)
			? decodeURIComponent(pair[1])
			: name;
		
		this.params[name] = value;
	}
}

Querystring.prototype.get = function(key, default_) {
	var value = this.params[key];
	return (value != null) ? value : default_;
}

Querystring.prototype.contains = function(key) {
	var value = this.params[key];
	return (value != null);
}