diff --git a/jquery.scrolly.js b/jquery.scrolly.js
index f6523a1..b4a45a0 100644
--- a/jquery.scrolly.js
+++ b/jquery.scrolly.js
@@ -40,16 +40,11 @@
     this.velocity = this.$element.attr('data-velocity');
     this.bgStart = parseInt(this.$element.attr('data-fit'), 10);
 
-    $(document).scroll(function(){
+   $(document).on('scroll', function(){
       self.didScroll = true;
+      self.scrolly();
     });
-
-    setInterval(function() {
-      if (self.didScroll) {
-        self.didScroll = false;
-        self.scrolly();
-      }
-    }, 10);
+    self.scrolly();
   };
 
   Plugin.prototype.scrolly = function() {
@@ -70,7 +65,7 @@
     if(this.bgStart){ position = position + this.bgStart; }
 
     if(this.options.bgParallax === true) {
-      this.$element.css({backgroundPosition: '50% '+position+'px'});
+      this.$element.css({backgroundPosition:  (this.options.horizontalPos || '50%') + ' ' + position+'px'});
     } else {
       this.$element.css({top: position});
     }