diff --git a/editor/embedapi.js b/editor/embedapi.js
index 8debfd6d..d4c15392 100644
--- a/editor/embedapi.js
+++ b/editor/embedapi.js
@@ -84,7 +84,7 @@ function embedded_svg_edit(frame){
 		"getStrokeOpacity", "setStrokeOpacity", "getTransformList", "getBBox", "getRotationAngle", "setRotationAngle", "each",
 		"bind", "setIdPrefix", "getBold", "setBold", "getItalic", "setItalic", "getFontFamily", "setFontFamily", "getFontSize",
 		"setFontSize", "getText", "setTextContent", "setImageURL", "setRectRadius", "setSegType", "quickClone",
-		"changeSelectedAttributeNoUndo", "changeSelectedAttribute", "deleteSelectedElements", "groupSelectedElements",
+		"changeSelectedAttributeNoUndo", "changeSelectedAttribute", "deleteSelectedElements", "groupSelectedElements", "zoomChanged",
 		"ungroupSelectedElement", "moveToTopSelectedElement", "moveToBottomSelectedElement", "moveSelectedElements",
 		"getStrokedBBox", "getVisibleElements", "cycleElement", "getUndoStackSize", "getRedoStackSize", "getNextUndoCommandText",
 		"getNextRedoCommandText", "undo", "redo", "cloneSelectedElements", "alignSelectedElements", "getZoom", "getVersion",
@@ -113,7 +113,7 @@ function embedded_svg_edit(frame){
       var data = e.data.substr(4);
       var cbid = data.substr(0, data.indexOf(";"));
       if(t.callbacks[cbid]){
-        if(data.substr(0,6) != "error:"){
+        if(data.substr(cbid.length + 1,6) != "error:"){
           t.callbacks[cbid](eval("("+data.substr(cbid.length+1)+")"))
         }else{
           t.callbacks[cbid](data, "error");
diff --git a/editor/svg-editor.js b/editor/svg-editor.js
index 0157831f..25c20394 100644
--- a/editor/svg-editor.js
+++ b/editor/svg-editor.js
@@ -782,7 +782,7 @@
 				});
 			};
 
-			var zoomChanged = function(window, bbox, autoCenter) {
+			var zoomChanged = svgCanvas.zoomChanged = function(window, bbox, autoCenter) {
 				var scrbar = 15,
 					res = svgCanvas.getResolution(),
 					w_area = workarea,
@@ -3447,7 +3447,7 @@
 
 				// set up gradients to be used for the buttons
 				var svgdocbox = new DOMParser().parseFromString(
-					'<svg xmlns="http://www.w3.org/2000/svg"><rect width="100%" height="100%"\
+					'<svg xmlns="http://www.w3.org/2000/svg"><rect width="16.5" height="16.5"\
 					fill="#' + cur.color + '" opacity="' + cur.opacity + '"/>\
 					<defs><linearGradient id="gradbox_"/></defs></svg>', 'text/xml');
 				var docElem = svgdocbox.documentElement;