diff --git a/.jshintrc b/.jshintrc
new file mode 100644
index 0000000..55cc1e8
--- /dev/null
+++ b/.jshintrc
@@ -0,0 +1 @@
+eqnull
diff --git a/textmode.coffee b/textmode.coffee
index 6da61ff..8cf6101 100644
--- a/textmode.coffee
+++ b/textmode.coffee
@@ -991,30 +991,35 @@ class @ImageTextMode
         ctx = canvas.getContext '2d'
 
         for cy in [ 0 ... @screen.length ]
-            continue if !@screen[ cy ]?
-            for cx in [ 0 ... @screen[ cy ].length ]
-                pixel = @screen[ cy ][ cx ]
-                continue if !pixel?
-                if pixel.attr?
-                    fg = pixel.attr & 15
-                    bg = ( pixel.attr & 240 ) >> 4
-                else
-                    fg = pixel.fg
-                    bg = pixel.bg
+            if @screen[ cy ]?
+                for cx in [ 0 ... @screen[ cy ].length ]
+                    pixel = @screen[ cy ][ cx ]
+                    if pixel?
+                        if pixel.attr?
+                            fg = pixel.attr & 15
+                            bg = ( pixel.attr & 240 ) >> 4
+                        else
+                            fg = pixel.fg
+                            bg = pixel.bg
 
-                px = cx * @font.width
-                py = cy * @font.height
+                        px = cx * @font.width
+                        py = cy * @font.height
 
-                ctx.fillStyle = @palette.toRgbaString( @palette.colors[ bg ] )
-                ctx.fillRect px, py, @font.width, @font.height
+                        ctx.fillStyle = @palette.toRgbaString( @palette.colors[ bg ] )
+                        ctx.fillRect px, py, @font.width, @font.height
 
-                ctx.fillStyle = @palette.toRgbaString( @palette.colors[ fg ] )
-                chr = @font.chars[ pixel.ch.charCodeAt( 0 ) & 0xff ]
-                for i in [ 0 ... @font.height ]
-                    line = chr[ i ]
-                    for j in [ 0 ... @font.width ]
-                        if line & ( 1 << @font.width - 1 - j )
-                            ctx.fillRect px + j, py + i, 1, 1
+                        ctx.fillStyle = @palette.toRgbaString( @palette.colors[ fg ] )
+                        chr = @font.chars[ pixel.ch.charCodeAt( 0 ) & 0xff ]
+                        i = 0
+                        for line in chr
+                        # [ 0 ... @font.height ]
+#                            line = chr[ i ]
+#                            for j in [ 0 ... @font.width ]
+#                                if line & ( 1 << @font.width - 1 - j )
+#                                    ctx.fillRect px + j, py + i, 1, 1
+
+                            ctx.fillRect px + j, py + i, 1, 1 for j in [ 0 ... @font.width ] when line & (1 << @font.width - 1 - j )
+                            i += 1
 
         canvasElem.setAttribute 'width', w
         canvasElem.setAttribute 'height', h
diff --git a/textmode.js b/textmode.js
index 1d7578c..78ebb60 100644
--- a/textmode.js
+++ b/textmode.js
@@ -304,7 +304,7 @@
     };
 
     ImageTextMode.prototype.renderCanvas = function(canvasElem) {
-      var bg, canvas, chr, ctx, cx, cy, fg, h, i, j, line, pixel, px, py, w, _i, _j, _k, _l, _ref, _ref1, _ref2, _ref3;
+      var bg, canvas, chr, ctx, cx, cy, fg, h, i, j, line, pixel, px, py, w, _i, _j, _k, _l, _len, _ref, _ref1, _ref2;
       w = this.getWidth() * this.font.width;
       h = this.getHeight() * this.font.height;
       canvas = document.createElement('canvas');
@@ -312,32 +312,32 @@
       canvas.setAttribute('height', h);
       ctx = canvas.getContext('2d');
       for (cy = _i = 0, _ref = this.screen.length; 0 <= _ref ? _i < _ref : _i > _ref; cy = 0 <= _ref ? ++_i : --_i) {
-        if (this.screen[cy] == null) {
-          continue;
-        }
-        for (cx = _j = 0, _ref1 = this.screen[cy].length; 0 <= _ref1 ? _j < _ref1 : _j > _ref1; cx = 0 <= _ref1 ? ++_j : --_j) {
-          pixel = this.screen[cy][cx];
-          if (pixel == null) {
-            continue;
-          }
-          if (pixel.attr != null) {
-            fg = pixel.attr & 15;
-            bg = (pixel.attr & 240) >> 4;
-          } else {
-            fg = pixel.fg;
-            bg = pixel.bg;
-          }
-          px = cx * this.font.width;
-          py = cy * this.font.height;
-          ctx.fillStyle = this.palette.toRgbaString(this.palette.colors[bg]);
-          ctx.fillRect(px, py, this.font.width, this.font.height);
-          ctx.fillStyle = this.palette.toRgbaString(this.palette.colors[fg]);
-          chr = this.font.chars[pixel.ch.charCodeAt(0) & 0xff];
-          for (i = _k = 0, _ref2 = this.font.height; 0 <= _ref2 ? _k < _ref2 : _k > _ref2; i = 0 <= _ref2 ? ++_k : --_k) {
-            line = chr[i];
-            for (j = _l = 0, _ref3 = this.font.width; 0 <= _ref3 ? _l < _ref3 : _l > _ref3; j = 0 <= _ref3 ? ++_l : --_l) {
-              if (line & (1 << this.font.width - 1 - j)) {
-                ctx.fillRect(px + j, py + i, 1, 1);
+        if (this.screen[cy] != null) {
+          for (cx = _j = 0, _ref1 = this.screen[cy].length; 0 <= _ref1 ? _j < _ref1 : _j > _ref1; cx = 0 <= _ref1 ? ++_j : --_j) {
+            pixel = this.screen[cy][cx];
+            if (pixel != null) {
+              if (pixel.attr != null) {
+                fg = pixel.attr & 15;
+                bg = (pixel.attr & 240) >> 4;
+              } else {
+                fg = pixel.fg;
+                bg = pixel.bg;
+              }
+              px = cx * this.font.width;
+              py = cy * this.font.height;
+              ctx.fillStyle = this.palette.toRgbaString(this.palette.colors[bg]);
+              ctx.fillRect(px, py, this.font.width, this.font.height);
+              ctx.fillStyle = this.palette.toRgbaString(this.palette.colors[fg]);
+              chr = this.font.chars[pixel.ch.charCodeAt(0) & 0xff];
+              i = 0;
+              for (_k = 0, _len = chr.length; _k < _len; _k++) {
+                line = chr[_k];
+                for (j = _l = 0, _ref2 = this.font.width; 0 <= _ref2 ? _l < _ref2 : _l > _ref2; j = 0 <= _ref2 ? ++_l : --_l) {
+                  if (line & (1 << this.font.width - 1 - j)) {
+                    ctx.fillRect(px + j, py + i, 1, 1);
+                  }
+                }
+                i += 1;
               }
             }
           }