diff --git a/core/modules/macros/chooser.js b/core/modules/macros/chooser.js
index 35c2c889d..8a217d788 100644
--- a/core/modules/macros/chooser.js
+++ b/core/modules/macros/chooser.js
@@ -89,10 +89,8 @@ exports.hoverChooser = function(x,y) {
 		var scale = scaleFactor * expandFactor,
 			translateX = x > 16 ? 0 : -(((16-x)/16) * widthPanel) / scale,
 			translateY = (y / scale) - ((y/window.innerHeight) * heightPanel);
-		domPanel.style.webkitTransformOrigin = 
-		domPanel.style.MozTransformOrigin = "0 0";
-		domPanel.style.webkitTransform = 
-		domPanel.style.MozTransform = "scale(" + scale + ") translateX(" + translateX + "px) translateY(" + translateY + "px)";
+		domPanel.style[$tw.browser.transformorigin] = "0 0";
+		domPanel.style[$tw.browser.transform] = "scale(" + scale + ") translateX(" + translateX + "px) translateY(" + translateY + "px)";
 	}
 };
 
diff --git a/core/modules/macros/zoomer.js b/core/modules/macros/zoomer.js
index cdf15ee8a..9bd9c1c91 100644
--- a/core/modules/macros/zoomer.js
+++ b/core/modules/macros/zoomer.js
@@ -30,11 +30,11 @@ exports.stopZoomer = function() {
 	var newScrollY = this.yFactor * (this.bodyHeight - this.windowHeight);
 	this.inZoomer = false;
 	window.scrollTo(0,newScrollY);
-	document.body.style.webkitTransform = "translateY(" + newScrollY * this.xFactor + "px) " + 
+	document.body.style[$tw.browser.transform] = "translateY(" + newScrollY * this.xFactor + "px) " + 
 		"scale(" + this.scale + ") " +
 		"translateY(" + ((this.windowHeight / this.scale) - this.bodyHeight) * this.yFactor * this.xFactor + "px)";
 	$tw.utils.removeClass(document.body,"in-zoomer");
-	document.body.style.webkitTransform = "translateY(0) scale(1) translateY(0)";
+	document.body.style[$tw.browser.transform] = "translateY(0) scale(1) translateY(0)";
 };
 
 /*
@@ -42,7 +42,7 @@ Zoom the body element given a touch/mouse position in screen coordinates
 */
 exports.hoverZoomer = function(x,y) {
 	// Put the transform origin at the top in the middle
-	document.body.style.webkitTransformOrigin = "50% 0";
+	document.body.style[$tw.browser.transformorigin] = "50% 0";
 	// Some shortcuts
 	this.bodyWidth = document.body.offsetWidth;
 	this.bodyHeight = document.body.offsetHeight;
@@ -77,7 +77,7 @@ exports.hoverZoomer = function(x,y) {
 	var transform = "translateY(" + preTranslateY.toFixed(8) + "px) " + 
 			"scale(" + scale.toFixed(8) + ") " +
 			"translateY(" + postTranslateY.toFixed(8) + "px)";
-	document.body.style.webkitTransform = transform;
+	document.body.style[$tw.browser.transform] = transform;
 };
 
 exports.handleEvent = function(event) {