diff --git a/src/GHistogram.js b/src/GHistogram.js
index 2368743..20d46f7 100644
--- a/src/GHistogram.js
+++ b/src/GHistogram.js
@@ -285,7 +285,7 @@ GHistogram.prototype.setPlotPoints = function(plotPoints) {
 			this.plotPoints[i].set(plotPoints[i]);
 		}
 
-		for ( i = this.plotPoints.lengh; i < nPoints; i++) {
+		for ( i = this.plotPoints.length; i < nPoints; i++) {
 			this.plotPoints[i] = new GPoint(plotPoints[i]);
 		}
 	}
diff --git a/src/GLayer.js b/src/GLayer.js
index c7d2145..a9821fd 100644
--- a/src/GLayer.js
+++ b/src/GLayer.js
@@ -608,7 +608,7 @@ GLayer.prototype.drawLines = function() {
 };
 
 GLayer.prototype.drawLine = function() {
-	var point1, point2, lc, lw, slope, ycut;
+	var point1, point2, lc, lw, slope, yCut;
 
 	if (arguments.length === 4 && arguments[0] instanceof GPoint) {
 		point1 = arguments[0];
@@ -617,7 +617,7 @@ GLayer.prototype.drawLine = function() {
 		lw = arguments[3];
 	} else if (arguments.length === 4) {
 		slope = arguments[0];
-		ycut = arguments[1];
+		yCut = arguments[1];
 		lc = arguments[2];
 		lw = arguments[3];
 	} else if (arguments.length === 2 && arguments[0] instanceof GPoint) {
@@ -627,7 +627,7 @@ GLayer.prototype.drawLine = function() {
 		lw = this.lineWidth;
 	} else if (arguments.length === 2) {
 		slope = arguments[0];
-		ycut = arguments[1];
+		yCut = arguments[1];
 		lc = this.lineColor;
 		lw = this.lineWidth;
 	} else {
@@ -1465,7 +1465,7 @@ GLayer.prototype.setPoint = function() {
 		index = arguments[0];
 		x = arguments[1];
 		y = arguments[2];
-		label = (index < nPoins) ? this.points[index].getLabel() : "";
+		label = (index < nPoints) ? this.points[index].getLabel() : "";
 	} else if (arguments.length === 2) {
 		index = arguments[0];
 		x = arguments[1].getX();
diff --git a/src/GPlot.js b/src/GPlot.js
index 792dc4e..92ffafc 100644
--- a/src/GPlot.js
+++ b/src/GPlot.js
@@ -571,7 +571,7 @@ GPlot.prototype.centerAndZoom = function(factor, xValue, yValue) {
 	this.xAxis.setLim(this.xLim);
 	this.topAxis.setLim(this.xLim);
 	this.yAxis.setLim(this.yLim);
-	this.rightAxis.setLim(yLim);
+	this.rightAxis.setLim(this.yLim);
 
 	// Update the plot limits (the layers, because the limits are fixed)
 	this.updateLimits();
@@ -925,8 +925,7 @@ GPlot.prototype.drawLegend = function(text, xRelativePos, yRelativePos) {
 		} else {
 			this.parent.fill(this.layerList[i - 1].getLineColor());
 			this.parent.rect(plotPosition[0], plotPosition[1], rectSize, rectSize);
-			this.layerList[i - i].drawAnnotation(text[i], position[0], position[1], this.parent.LEFT,
-					this.parent.CENTER);
+			this.layerList[i - i].drawAnnotation(text[i], position[0], position[1], this.parent.LEFT, this.parent.CENTER);
 		}
 	}
 
@@ -1475,19 +1474,19 @@ GPlot.prototype.setVerticalAxesTicks = function(ticks) {
 };
 
 GPlot.prototype.setFontName = function(fontName) {
-	this.maniLayer.setFontName(fontName);
+	this.mainLayer.setFontName(fontName);
 };
 
 GPlot.prototype.setFontColor = function(fontColor) {
-	this.maniLayer.setFontColor(fontColor);
+	this.mainLayer.setFontColor(fontColor);
 };
 
 GPlot.prototype.setFontSize = function(fontSize) {
-	this.maniLayer.setFontSize(fontSize);
+	this.mainLayer.setFontSize(fontSize);
 };
 
 GPlot.prototype.setFontProperties = function(fontName, fontColor, fontSize) {
-	this.maniLayer.setFontProperties(fontName, fontColor, fontSize);
+	this.mainLayer.setFontProperties(fontName, fontColor, fontSize);
 };
 
 GPlot.prototype.setAllFontProperties = function(fontName, fontColor, fontSize) {
@@ -1499,7 +1498,7 @@ GPlot.prototype.setAllFontProperties = function(fontName, fontColor, fontSize) {
 
 	this.mainLayer.setAllFontProperties(fontName, fontColor, fontSize);
 
-	for (var i = 0; i < layerList.length; i++) {
+	for (var i = 0; i < this.layerList.length; i++) {
 		this.layerList[i].setAllFontProperties(fontName, fontColor, fontSize);
 	}
 };