var $j = jQuery.noConflict();

$j(function() {

  // comment next lines to disable features

  lightBox(); // initialize & configure lightbox script

  navigation(); // dynamic light selection in the menu (windows7-like)

  if ($j("form#contact").length > 0) contactForm(); // initialize javascript validators for the contact form

  if ($j("#slides img").length > 1) setInterval("slides()", getMeta("pandora.1")); // slide timer

  if ($j("#newsline").length > 0) setInterval("newsline()", getMeta("pandora.2")); // news timer

  if ($j("#folio").length > 0) folio(500, 0.6); // portfolio sleek image shade (timer, opacity)

  if ($j("div.item p.tags a", "#folio").length > 0) folioFilter(); // portfolio item filter

 // $j("#slider").easySlider({
 //   auto: false,
 //   continuous: true,
 //   controlsShow: true,
 //   pause: 5000,
 //   nextText: ' ',
 //   prevText: ' '
 // });

});


// functions


function getMeta($name) {
  return $j("meta[name=" + $name + "]").attr('content');
}

function contactForm() {

	$j(".input", "form#contact").blur(function() { validateInput($j(this)); }); // validate when unfocus

  $j("#submit", "form#contact").click(function() { // validate on submit
		$j(".input", "form#contact").each(function() { validateInput($j(this)); })
    if (!isFormValid())
      return false;
  });

}

function isFormValid() {

  return $j(".input.incorrect", "form#contact").length > 0 ? false : true;

}

function validateInput(obj) {

  var id = obj.attr("id");
  var correct = false;

  if (id == "email") { // email validator
    if (obj.val().match(/^[a-zA-Z0-9_\.\-]+\@([a-zA-Z0-9\-]+\.)+[a-zA-Z0-9]{2,4}$/))
      correct = true;
  }
  else if (id == "message") { // message validator
    if (obj.val().replace(/(^\s+)|(\s+$)/g, "") != "")
      correct = true;
  }

  obj.removeClass("correct incorrect"); // clearing
  if (correct) {
    obj.addClass("correct");
  }
  else {
    obj.addClass("incorrect");
  }

}

//

function navigation() {
  $j("li a", "#nav").
  mousemove(function(e) {
    var relativeY = (e.pageY - this.offsetTop - 45) / 4;
    $j(this).css("backgroundPosition", "center " + relativeY + "px");
  }).
  mouseout(function(e) {
    $j(this).css("backgroundPosition", "center center");
  });
}

//

function lightBox() {
  $j("a[rel^='lightbox']").prettyPhoto({
    animationSpeed: 'fast', /* fast/slow/normal */
    padding: 5, /* def 40 padding for each side of the picture */
    opacity: 0.9, /* Value betwee 0 and 1 */
    showTitle: false, /* true/false */
    allowresize: true, /* true/false */
    modal: true, /* If set to true, only the close button will close the window */
    counter_separator_label: '/', /* The separator for the gallery counter 1 "of" 2 */
    theme: 'dark_rounded', /* light_rounded / dark_rounded / light_square / dark_square */
    callback: function() { }
  });
}

//

function folio(time, opacity) {
  $j("img", "#folio")
  .css("opacity", 1)
  .hover(
    function() {
				$j(this).stop().animate({ opacity: opacity }, time);
    },
    function() {
				$j(this).stop().animate({ opacity: 1 }, time);
    }
    );
}

function folioFilter() {
  var tags = getAllTags();
  var ph = $j(".placeholder", "#filter");
  $j(tags).each(function(i, tag) {
    ph.append(', <a href="#">' + tag + '</a>');
  });

  $j(".placeholder a", "#filter").click(function() {

    $j(".placeholder a.active", "#filter").removeClass("active");
    $j(this).addClass("active");

    folioClick($j(this));
    return false;
  });

  $j("#filter", "#folio").show();

	// select by the #hash in the url
	var hash = trim(window.location.hash.substring(1));
	if (hash.length > 0) {
		$j(".placeholder a:contains('" + hash + "'):first", "#filter").click();
}
}

{ // folioFilter functions:

  function folioClick(obj) {
    var tag = obj.text();
    var rel = obj.attr("rel");

    folioHideAll();

    if (rel == "Start")
      folioShow();
    else
      folioShow(tag);

    folioClearer();
  }

  function folioClearer() {
    var visibleItems = $j("div.item:visible", "#folio");
    var lastIndex = visibleItems.length - 1;
    visibleItems.each(function(i, item) {
      if (i % 3 == 2 && i != lastIndex) $j('<div class="clear"> </div>').insertAfter(item);
    });
  }

  function folioShow(tag) {
    if (tag)
      $j("div.item:has(p.tags a:contains('" + tag + "'))", "#folio").show();
    else
      $j("div.item", "#folio").show();
  }

  function folioHideAll() {
    $j("div.item", "#folio").hide();
    $j("#folio > div.clear:not(:last)").remove();
  }

  function getAllTags() {
    var tags = [];
    $j("div.item p.tags a", "#folio").each(function() {
      tags.push(trim($j(this).text()));
    });
    return tags.unique().sort();
  }

}

//

function slides() {

  if (ie6) {
    return; // ie6 fails to animate overall opacity of the transparent PNGs
  }

  var $active = $j("#slides img.active");

  if ($active.length == 0) {
    $active = $j("#slides img:last");
  }

  var $next = $active.next().length ?
  $active.next() :
  $j("#slides img:first");

  $active.addClass("pre-active");

  $next.
		css({ opacity: 0 }).
  addClass("active").
		animate({ opacity: 1 }, 1000, function() {
    $active.
    removeClass("active pre-active").
				css({ opacity: 0 });
    });

}

//

function newsline() {
  var $ph = $j("#newsline a.ph");

  if ($ph.length == 0) { // prepare basement
    var $first = $j("#newsline a:first");
    $j("#newsline p").append("<br />").append($first.clone());
    $ph = $first.addClass("ph");
  }

  var $active = $j("#newsline a.active");

  if ($active.length == 0) {
    $active = $j("#newsline a:last");
  }

  var $next = $active.next().next().length ?
  $active.next().next() :
  $j("#newsline a:not(.ph):first");

  $next.addClass("active");
  $active.removeClass("active");

  if (ie6) { // bha! another ie6 opacity fail
    $ph.html($next.html());
    $ph.attr("href", $next.attr("href"));
  }
  else {
		$ph.animate({ opacity: 0 }, 500, function() { // hiding
      $ph.html($next.html());
      $ph.attr("href", $next.attr("href"));
			$ph.animate({ opacity: 1 }, 300); // revealing
    });
  }
}

//

var ie6 = jQuery.browser.msie && parseInt(jQuery.browser.version) < 7;

// JS helpers:

{
  function trim(str) {
    return str.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
  }

  // Array.indexOf( value, begin, strict )
  Array.prototype.indexOf = function(v, b, s) {
    for (var i = +b || 0, l = this.length; i < l; i++) {
			if (this[i] === v || s && this[i] == v) { return i; }
      }
    return -1;
  };
  // Array.unique( strict )
  Array.prototype.unique = function(b) {
    var a = [], i, l = this.length;
    for (i = 0; i < l; i++) {
			if (a.indexOf(this[i], 0, b) < 0) { a.push(this[i]); }
      }
    return a;
  };
  // Array1.intersect( Array2 )
  Array.prototype.intersect = function(b) {
    var as, al, a = [];
		if (b.length < this.length) { as = b; al = this }
		else { as = this; al = b }
    $j.each(as, function(i, user) {
      if (al.indexOf(user) >= 0)
        a.push(user);
    });
    return a;
  }
}