View difference between Paste ID: f1f3EErW and NZd7nDbz

 <script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
     <script>
         var work = $('body');
 
-        var backgrounds = new Array(
+		var backgroundUrls = [
-            'url(img/contentbackground1.jpg)'
+			'img/contentbackground1.jpg',
-          , 'url(img/contentbackground2.jpg)'
+			'img/contentbackground2.jpg',
-          , 'url(img/contentbackground3.jpg)'
+			'img/contentbackground3.jpg',
-          , 'url(img/contentbackground4.jpg)'
+			'img/contentbackground4.jpg'
-        );
+		];
 
-        var current = 0;
+        var currentBackgroundIndex = 0;
-
+
-        function nextBackground(){
+		function setNextBackground () {
-            current++;
+			work.css('background-image', 'url(' + backgrounds[currentBackgroundIndex] + ')');
-            current = current % backgrounds.length;
+			currentBackgroundIndex++;
-            work.css('contentbackground1', backgrounds[current]);
+		}
-        }
+
-        setInterval(nextBackground, 1000);
+		setNextBackground();
         setInterval(currentBackgroundIndex, 1000);
-        work.css('contentbackground1', backgrounds[0]);
+
     </script>