diff --git a/js/Svg.js b/js/Svg.js
index 87e065b..d61ce96 100644
--- a/js/Svg.js
+++ b/js/Svg.js
@@ -9,132 +9,132 @@
 //SVG validator: http://validator.w3.org/
 //SVG viewer: http://svg-edit.googlecode.com/svn/branches/2.6/editor/svg-editor.html
 function saveToSvg() {
-  var lastX = 0, lastY = 0, lastIsMove;
-  var svg = '';
+	var lastX = 0, lastY = 0, lastIsMove = false;
+	var svg = '';
 
-  var boundsWidth = doodleBounds[2] - doodleBounds[0];
-  var boundsHeight = doodleBounds[3] - doodleBounds[1];
+	var boundsWidth = doodleBounds[2] - doodleBounds[0];
+	var boundsHeight = doodleBounds[3] - doodleBounds[1];
 
-  svg += '<?xml version="1.0" standalone="no"?>\n';
-  svg += '<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">\n';
-  svg += '<svg width="' + boundsWidth + '" height="' + boundsHeight + '" version="1.1" xmlns="http://www.w3.org/2000/svg">\n';
-  svg += '\t<desc>Doodle 3D sketch</desc>\n';
+	svg += '<?xml version="1.0" standalone="no"?>\n';
+	svg += '<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">\n';
+	svg += '<svg width="' + boundsWidth + '" height="' + boundsHeight + '" version="1.1" xmlns="http://www.w3.org/2000/svg">\n';
+	svg += '\t<desc>Doodle 3D sketch</desc>\n';
 
-  var data = '';
-  for (var i = 0; i < _points.length; ++i) {
-    var x = _points[i][0], y = _points[i][1], isMove = _points[i][2];
-    var dx = x - lastX, dy = y - lastY;
+	var data = '';
+	for (var i = 0; i < _points.length; ++i) {
+		var x = _points[i][0], y = _points[i][1], isMove = _points[i][2];
+		var dx = x - lastX, dy = y - lastY;
 
-    if (i == 0)
-      data += 'M'; //emit absolute move on first pair of coordinates
-    else if (isMove != lastIsMove)
-      data += isMove ? 'm' : 'l';
+		if (i == 0)
+			data += 'M'; //emit absolute move on first pair of coordinates
+		else if (isMove != lastIsMove)
+			data += isMove ? 'm' : 'l';
 
-    data += dx + ',' + dy + ' ';
+		data += dx + ',' + dy + ' ';
 
-    lastX = x;
-    lastY = y;
-    lastIsMove = isMove;
-  }
+		lastX = x;
+		lastY = y;
+		lastIsMove = isMove;
+	}
 
-  svg += '\t<path transform="translate(' + -doodleBounds[0] + ',' + -doodleBounds[1] + ')" d="' + data + '" fill="none" stroke="black" stroke-width="2" />\n';
+	svg += '\t<path transform="translate(' + -doodleBounds[0] + ',' + -doodleBounds[1] + ')" d="' + data + '" fill="none" stroke="black" stroke-width="2" />\n';
 
-  var fields = JSON.stringify({'height': numLayers, 'outlineShape': VERTICALSHAPE, 'twist': rStep});
-  svg += '\t<!--<![CDATA[d3d-keys ' + fields + ']]>-->\n';
+	var fields = JSON.stringify({'height': numLayers, 'outlineShape': VERTICALSHAPE, 'twist': rStep});
+	svg += '\t<!--<![CDATA[d3d-keys ' + fields + ']]>-->\n';
 
-  svg += '</svg>\n';
+	svg += '</svg>\n';
 
-  return svg;
+	return svg;
 }
 
 
 //TODO: use local variables instead of _points,numLayers,VERTICALSHAPE and rStep so we can leave a current doodle in tact if an error occurs while parsing
 function loadFromSvg(svgData) {
-  var mode = '', x = 0, y = 0;
+	var mode = '', x = 0, y = 0;
 
-  console.log("loading " + svgData.length + " bytes of data...");
+	console.log("loading " + svgData.length + " bytes of data...");
 
-  clearDoodle();
+	clearDoodle();
 
-  var p = svgData.indexOf("<path");
-  if (p == -1) { console.log("loadFromSvg: could not find parsing start point"); return false; }
-  p = svgData.indexOf('d="', p);
-  if (p == -1) { console.log("loadFromSvg: could not find parsing start point"); return false; }
-  p += 3; //skip 'd="'
+	var p = svgData.indexOf("<path");
+	if (p == -1) { console.log("loadFromSvg: could not find parsing start point"); return false; }
+	p = svgData.indexOf('d="', p);
+	if (p == -1) { console.log("loadFromSvg: could not find parsing start point"); return false; }
+	p += 3; //skip 'd="'
 
-  var skipSpace = function() { while (svgData.charAt(p) == ' ') p++; }
-  var parseCommand = function() {
-    while (true) {
-      skipSpace();
-      var c = svgData.charAt(p);
-      if (c == 'M' || c == 'm' || c == 'l') { //new command letter
-        mode = c;
-      } else if (c == '"') { //end of command chain
-        return true;
-      } else { //something else, must be a pair of coordinates...
-        var tx = 0, ty = 0, numberEnd = 0, len = 0;
-        numberEnd = svgData.indexOf(',', p);
-        if (numberEnd == -1) { console.log("could not find comma in coordinate pair"); return false; }
-        len = numberEnd - p;
-        tx = parseInt(svgData.substr(p, len));
-        p += len + 1;
-        skipSpace();
-        numberEnd = svgData.indexOf(' ', p);
-        if (numberEnd == -1) { console.log("could not find space after coordinate pair"); return false; }
-        len = numberEnd - p;
-        ty = parseInt(svgData.substr(p, len));
-        p += len;
+	var skipSpace = function() { while (svgData.charAt(p) == ' ') p++; }
+	var parseCommand = function() {
+		while (true) {
+			skipSpace();
+			var c = svgData.charAt(p);
+			if (c == 'M' || c == 'm' || c == 'l') { //new command letter
+				mode = c;
+			} else if (c == '"') { //end of command chain
+				return true;
+			} else { //something else, must be a pair of coordinates...
+				var tx = 0, ty = 0, numberEnd = 0, len = 0;
+				numberEnd = svgData.indexOf(',', p);
+				if (numberEnd == -1) { console.log("could not find comma in coordinate pair"); return false; }
+				len = numberEnd - p;
+				tx = parseInt(svgData.substr(p, len));
+				p += len + 1;
+				skipSpace();
+				numberEnd = svgData.indexOf(' ', p);
+				if (numberEnd == -1) { console.log("could not find space after coordinate pair"); return false; }
+				len = numberEnd - p;
+				ty = parseInt(svgData.substr(p, len));
+				p += len;
 
-        if (mode == 'M' || mode == 'L') {
-          x = tx; y = ty;
-        } else if (mode == 'm' || mode == 'l') {
-          x += tx; y += ty;
-        } else {
-          console.log("loadFromSvg: found coordinate pair but mode was never set");
-          return false;
-        }
+				if (mode == 'M' || mode == 'L') {
+					x = tx; y = ty;
+				} else if (mode == 'm' || mode == 'l') {
+					x += tx; y += ty;
+				} else {
+					console.log("loadFromSvg: found coordinate pair but mode was never set");
+					return false;
+				}
 
-        var isMove = mode == 'm' || mode == 'M';
+				var isMove = mode == 'm' || mode == 'M';
 
-        //TODO: create script-wide function for adding points?
-        //console.log("inserting "+x+","+y+" ",isMove);
-        updatePrevX = x;
-        updatePrevY = y;
-        _points.push([x, y, isMove]);
-        adjustBounds(x, y);
-        adjustPreviewTransformation();
+				//TODO: create script-wide function for adding points?
+				//console.log("inserting "+x+","+y+" ",isMove);
+				updatePrevX = x;
+				updatePrevY = y;
+				_points.push([x, y, isMove]);
+				adjustBounds(x, y);
+				adjustPreviewTransformation();
 
-        if (isMove) draw(x, y, .5);
-        else draw(x, y);
-      }
-      p++;
-    }
+				if (isMove) draw(x, y, .5);
+				else draw(x, y);
+			}
+			p++;
+		}
 
-    return true;
-  };
+		return true;
+	};
 
-  parseCommand(); //depends on value of p, so don't move this without taking that into consideration
+	parseCommand(); //depends on value of p, so don't move this without taking that into consideration
 
-  const fieldDefMarker = "<!--<![CDATA[d3d-keys";
-  p = svgData.indexOf(fieldDefMarker);
-  if (p == -1) { console.log("loadFromSvg: could not find metadata marker"); return false; }
-  p += fieldDefMarker.length;
-  skipSpace();
+	const fieldDefMarker = "<!--<![CDATA[d3d-keys";
+	p = svgData.indexOf(fieldDefMarker);
+	if (p == -1) { console.log("loadFromSvg: could not find metadata marker"); return false; }
+	p += fieldDefMarker.length;
+	skipSpace();
 
-  var endP = svgData.indexOf("]]>-->", p);
-  if (endP == -1) { console.log("loadFromSvg: could not find metadata end-marker"); return false; }
-  var metaFields = JSON.parse(svgData.substr(p, endP - p));
-  //TODO: log error and return false if parsing failed
-  for (var k in metaFields) {
-    var v = metaFields[k];
-    switch (k) {
-      case "height": numLayers = v; break;
-      case "outlineShape": VERTICALSHAPE = v; break;
-      case "twist": rStep = v; break;
-    }
-  }
+	var endP = svgData.indexOf("]]>-->", p);
+	if (endP == -1) { console.log("loadFromSvg: could not find metadata end-marker"); return false; }
+	var metaFields = JSON.parse(svgData.substr(p, endP - p));
+	//TODO: log error and return false if parsing failed
+	for (var k in metaFields) {
+		var v = metaFields[k];
+		switch (k) {
+		case "height": numLayers = v; break;
+		case "outlineShape": VERTICALSHAPE = v; break;
+		case "twist": rStep = v; break;
+		}
+	}
 
-  renderToImageDataPreview();
+	renderToImageDataPreview();
 
-  return true;
+	return true;
 }