From 0a3cf31b37b50965fc8c4a7d53dfd8d54aa9b0f7 Mon Sep 17 00:00:00 2001
From: Jake Howard <git@theorangeone.net>
Date: Thu, 13 Aug 2015 13:36:19 +0100
Subject: [PATCH] Uploaded initial code

---
 parallax.js | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 parallax.js

diff --git a/parallax.js b/parallax.js
new file mode 100644
index 0000000..2d8b64b
--- /dev/null
+++ b/parallax.js
@@ -0,0 +1,24 @@
+function init_parallax() {
+    $('.parallax').each(function(){
+        // Calculate Offset
+        inset = $(this).attr('parallax-inset');
+        image_height = $(this).height();
+        range = image_height / inset;
+        $(this).attr('parallax-offset', range / 2);
+    });
+    console.log("Parallax Initialised.");
+    parallax();
+}
+function parallax() {
+    window_top = $(window).scrollTop();
+    window_bottom = window_top + $(window).height();
+    $('.parallax').each(function(){
+        if (!is_on_screen(this) || !$(this).attr('parallax-offset') != false) { return; }
+        element = $(this);
+        center_pos = (element.offset().top - $(window).scrollTop()) + (element.height() / 2);
+        perc = -(0.5 - ((window_top - center_pos) / window_bottom));
+
+        pos = Math.round((perc * element.attr('parallax-offset')) * 100) / 100;
+        element.css('background-position',"0px " + pos + "px");
+    });
+}