diff --git a/scripts/aux/glitch.js b/scripts/aux/glitch.js
index 3dcfafe..caa5499 100644
--- a/scripts/aux/glitch.js
+++ b/scripts/aux/glitch.js
@@ -18,7 +18,7 @@ define(
 		var iterations;
 		var quality;
 		var seed;
-		var offset;
+		var amount;
 		var base64;
 		var byte_array;
 		var jpg_header_length;
@@ -34,7 +34,7 @@ define(
 		{
 			seed = input.seed / 100;
 			quality = input.quality / 100;
-			offset = input.offset / 100;
+			amount = input.amount / 100;
 			iterations = input.iterations;
 
 			canvas_helper.resize( canvas, image_data );
@@ -46,7 +46,7 @@ define(
 
 			for ( i = 0; i < iterations; i++ )
 			{
-				glitchJpegBytes( byte_array, jpg_header_length, seed, offset, i );
+				glitchJpegBytes( byte_array, jpg_header_length, seed, amount, i, iterations );
 			}
 
 			img = new Image();
@@ -59,19 +59,23 @@ define(
 			img.src = byteArrayToBase64( byte_array );
 		}
 
-		function glitchJpegBytes( byte_array, jpg_header_length, seed, offset, iteration )
+		function glitchJpegBytes( byte_array, jpg_header_length, seed, amount, i, len )
 		{
-			var it = ( iteration + 1 ) / 10;
 			var max_index = byte_array.length - jpg_header_length - 4;
-			var px_index = it * max_index + offset * 10;
+			var px_min = parseInt( max_index / len * i, 10 );
+			var px_max = parseInt( max_index / len * ( i + 1 ), 10 );
 
-			if ( px_index > max_index )
+			var delta = px_max - px_min;
+			var px_i = parseInt( px_min + delta * seed, 10 );
+
+			if ( px_i > max_index )
 			{
-				px_index = px_index;
+				px_i = max_index;
 			}
 
-			var index = Math.floor( jpg_header_length + px_index );
-			byte_array[index] = Math.floor( seed * 256 );
+			var index = Math.floor( jpg_header_length + px_i );
+
+			byte_array[index] = Math.floor( amount * 256 );
 		}
 
 		function getBase64FromImageData( image_data, quality )