A fullscreen image gallery made with jQuery and CSS.

The code

The css with some custom font via Google font API

@import url(http://fonts.googleapis.com/css?family=Josefin+Sans+Std+Light);
html,body{height:100%;}
body{margin:0px; padding:0px; background:#000; color:#FFFFFF;}
#toolbar{position:fixed; z-index:2; right:10px; top:10px; padding:5px; background:url(fs_img_g_bg.png);}
#toolbar img{border:none;}
#img_title{position:fixed; z-index:2; left:10px; top:10px; padding:10px; background:url(fs_img_g_bg.png); color:#FFF; font-family:'Josefin Sans Std Light', arial, serif; font-size:24px; text-transform:uppercase;}
#bg{position:fixed; z-index:1; overflow:hidden;}
#bgimg{display:none;}
#preloader{position:relative; z-index:2; width:32px; padding:20px; top:80px; margin:auto; background:#000;}
#outer_container{z-index:2; position:fixed; bottom:0; margin:0; height:170px; padding:40px 5px;}
#thumbScroller{position:relative; overflow:hidden; background:url(fs_img_g_bg.png);}
#thumbScroller .container{position:relative; left:0;}
#thumbScroller .content{float:left;}
#thumbScroller .content div{margin:10px; height:100%;}
#thumbScroller img{border:5px solid #fff;}
#thumbScroller a{padding:5px; display:block;}

The jQuery scripts and plugins inside head tag

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
<script type="text/javascript" src="jquery.easing.1.3.js"></script>

The full javascript code is inserted in the end of the document, just before the closing body tag.

$outer_container=$("#outer_container");
$thumbScroller=$("#thumbScroller");
$thumbScroller_container=$("#thumbScroller .container");
$thumbScroller_content=$("#thumbScroller .content");
$thumbScroller_thumb=$("#thumbScroller .thumb");
$preloader=$("#preloader");
$toolbar=$("#toolbar");
$toolbar_a=$("#toolbar a");
$bgimg="#bgimg";

$(window).load(function() {
 //thumbnail scroller
 sliderLeft=$thumbScroller_container.position().left;
 padding=$outer_container.css("paddingRight").replace("px", "");
 sliderWidth=$(window).width()-padding;
 $thumbScroller.css("width",sliderWidth);
 var totalContent=0;
 fadeSpeed=200;
 
 $thumbScroller_content.each(function () {
  var $this=$(this);
  totalContent+=$this.innerWidth();
  $thumbScroller_container.css("width",totalContent);
  $this.children().children().children(".thumb").fadeTo(fadeSpeed, 0.6);
 });

 $thumbScroller.mousemove(function(e){
  if($thumbScroller_container.width()>sliderWidth){
     var mouseCoords=(e.pageX - this.offsetLeft);
     var mousePercentX=mouseCoords/sliderWidth;
     var destX=-(((totalContent-(sliderWidth))-sliderWidth)*(mousePercentX));
     var thePosA=mouseCoords-destX;
     var thePosB=destX-mouseCoords;
     var animSpeed=600; //ease amount
     var easeType="easeOutCirc";
     if(mouseCoords>destX){
      //$thumbScroller_container.css("left",-thePosA); //without easing
      $thumbScroller_container.stop().animate({left: -thePosA}, animSpeed,easeType); //with easing
     } else if(mouseCoords<destX){
      //$thumbScroller_container.css("left",thePosB); //without easing
      $thumbScroller_container.stop().animate({left: thePosB}, animSpeed,easeType); //with easing
     } else {
    $thumbScroller_container.stop();  
     }
  }
 });

 $outer_container.fadeTo(fadeSpeed, 0.8);
 $outer_container.hover(
  function(){ //mouse over
   var $this=$(this);
   $this.stop().fadeTo("slow", 1);
  },
  function(){ //mouse out
   var $this=$(this);
   $this.stop().fadeTo("slow", 0);
  }
 );

 $thumbScroller_thumb.hover(
  function(){ //mouse over
   var $this=$(this);
   $this.stop().fadeTo(fadeSpeed, 1);
  },
  function(){ //mouse out
   var $this=$(this);
   $this.stop().fadeTo(fadeSpeed, 0.6);
  }
 );

 //on window resize scale image and reset thumbnail scroller
 $(window).resize(function() {
  FullScreenBackground($bgimg);
  $thumbScroller_container.stop().animate({left: sliderLeft}, 400,"easeOutCirc"); 
  var newWidth=$(window).width()-padding;
  $thumbScroller.css("width",newWidth);
  sliderWidth=newWidth;
 });

 FullScreenBackground($bgimg); //scale 1st image
});

$($bgimg).load(function() {
 $preloader.fadeOut("fast"); //hide preloader
 var $this=$(this);
 $this.removeAttr("width").removeAttr("height").css({ width: "", height: "" });
 FullScreenBackground($this);
 var imageTitle=$("#img_title").data("imageTitle");
 if(imageTitle){
  $this.attr("alt", imageTitle).attr("title", imageTitle);
  $("#img_title").html(imageTitle);
 } else {
  $("#img_title").html($(this).attr("title"));
 }
 $this.fadeIn("slow"); //fadein background image
});

//mouseover toolbar
$toolbar.fadeTo("fast", 0.4);
$toolbar.hover(
 function(){ //mouse over
  var $this=$(this);
  $this.stop().fadeTo("fast", 1);
 },
 function(){ //mouse out
  var $this=$(this);
  $this.stop().fadeTo("fast", 0.4);
 }
);

//Clicking on thumbnail changes the background image
$("#outer_container a").click(function(event){
 event.preventDefault();
 $preloader.fadeIn("fast"); //show preloader
 var $this=$(this);
 var title_attr=$this.children("img").attr("title"); //get image title attribute
 $("#img_title").data("imageTitle", title_attr); //store image title
 $($bgimg).css("display","none").attr("src", this); //change image source
}); 

//Image scale function
function FullScreenBackground(theItem){
var winWidth=$(window).width();
var winHeight=$(window).height();
var imageWidth=$(theItem).width();
var imageHeight=$(theItem).height();
var picHeight = imageHeight / imageWidth;
var picWidth = imageWidth / imageHeight;
if($toolbar.data("imageViewMode")=="full"){ //fullscreen size image mode
 if ((winHeight / winWidth) < picHeight) {
  $(theItem).css("width",winWidth);
  $(theItem).css("height",picHeight*winWidth);
 } else {
  $(theItem).css("height",winHeight);
  $(theItem).css("width",picWidth*winHeight);
 };
} else { //normal size image mode
 if ((winHeight / winWidth) > picHeight) {
  $(theItem).css("width",winWidth);
  $(theItem).css("height",picHeight*winWidth);
 } else {
  $(theItem).css("height",winHeight);
  $(theItem).css("width",picWidth*winHeight);
 };
}
$(theItem).css("margin-left",(winWidth-$(theItem).width())/2);
$(theItem).css("margin-top",(winHeight-$(theItem).height())/2);
}

//Image view mode function - fullscreen or normal size
function ImageViewMode(theMode){
 $toolbar.data("imageViewMode", theMode);
 FullScreenBackground($bgimg);
 if(theMode=="full"){
  $toolbar_a.html("<img src='toolbar_n_icon.png' width='50' height='50'  />").attr("onClick", "ImageViewMode('normal');return false").attr("title", "Restore");
 } else {
  $toolbar_a.html("<img src='toolbar_fs_icon.png' width='50' height='50'  />").attr("onClick", "ImageViewMode('full');return false").attr("title", "Maximize");
 }
}

The markup

<div id="bg"><img src="images/Universe_and_planets_digital_art_wallpaper_denebola.jpg" width="1680" height="1050" alt="Denebola" title="Denebola" id="bgimg" /></div>
<div id="preloader"><img src="ajax-loader_dark.gif" width="32" height="32" /></div>
<div id="img_title"></div>
<div id="toolbar"><a href="#" title="Maximize" onClick="ImageViewMode('full');return false"><img src="toolbar_fs_icon.png" width="50" height="50"  /></a></div>
<div id="outer_container">
<div id="thumbScroller">
 <div class="container">
     <div class="content">
         <div><a href="images/Universe_and_planets_digital_art_wallpaper_denebola.jpg"><img src="images/Universe_and_planets_digital_art_wallpaper_denebola_thumb.jpg" title="Denebola" alt="Denebola" class="thumb" /></a></div>
        </div>
        <div class="content">
         <div><a href="images/Universe_and_planets_digital_art_wallpaper_lux.jpg"><img src="images/Universe_and_planets_digital_art_wallpaper_lux_thumb.jpg" title="Lux Aeterna" alt="Lux Aeterna" class="thumb" /></a></div>
        </div>
     <div class="content">
         <div><a href="images/Universe_and_planets_digital_art_wallpaper_dk.jpg"><img src="images/Universe_and_planets_digital_art_wallpaper_dk_thumb.jpg" title="X-Wing on patrol" alt="X-Wing on patrol" class="thumb" /></a></div>
        </div>
        <div class="content">
         <div><a href="images/Universe_and_planets_digital_art_wallpaper_albireo.jpg"><img src="images/Universe_and_planets_digital_art_wallpaper_albireo_thumb.jpg" title="Albireo Outpost" alt="Albireo Outpost" class="thumb" /></a></div>
        </div>
        <div class="content">
         <div><a href="images/Universe_and_planets_digital_art_wallpaper_church.jpg"><img src="images/Universe_and_planets_digital_art_wallpaper_church_thumb.jpg" title="Church of Heaven" alt="Church of Heaven" class="thumb" /></a></div>
        </div>
        <div class="content">
         <div><a href="images/Universe_and_planets_digital_art_wallpaper_Decampment.jpg"><img src="images/Universe_and_planets_digital_art_wallpaper_Decampment_thumb.jpg" title="Decampment" alt="Decampment" class="thumb" /></a></div>
        </div>
        <div class="content">
         <div><a href="images/Universe_and_planets_digital_art_wallpaper_Hibernaculum.jpg"><img src="images/Universe_and_planets_digital_art_wallpaper_Hibernaculum_thumb.jpg" title="Hibernaculum" alt="Hibernaculum" class="thumb" /></a></div>
        </div>
        <div class="content">
         <div><a href="images/Universe_and_planets_digital_art_wallpaper_lucernarium.jpg"><img src="images/Universe_and_planets_digital_art_wallpaper_lucernarium_thumb.jpg" title="Supremus Lucernarium" alt="Supremus Lucernarium" class="thumb" /></a></div>
        </div>
        <div class="content">
         <div><a href="images/Universe_and_planets_digital_art_wallpaper_moons.jpg"><img src="images/Universe_and_planets_digital_art_wallpaper_moons_thumb.jpg" title="Aurea Mediocritas" alt="Aurea Mediocritas" class="thumb" /></a></div>
        </div>
        <div class="content">
         <div><a href="images/Universe_and_planets_digital_art_wallpaper_praedestinatio.jpg"><img src="images/Universe_and_planets_digital_art_wallpaper_praedestinatio_thumb.jpg" title="Praedestinatio" alt="Praedestinatio" class="thumb" /></a></div>
        </div>
        <div class="content">
         <div><a href="images/Universe_and_planets_digital_art_wallpaper_transitorius.jpg"><img src="images/Universe_and_planets_digital_art_wallpaper_transitorius_thumb.jpg" title="Transitorius" alt="Transitorius" class="thumb" /></a></div>
        </div>
        <div class="content">
         <div><a href="images/Universe_and_planets_digital_art_wallpaper_victimofgravity.jpg"><img src="images/Universe_and_planets_digital_art_wallpaper_victimofgravity_thumb.jpg" title="Victim of Gravity" alt="Victim of Gravity" class="thumb" /></a></div>
        </div>
 </div>
</div>
</div>

That’s all!