diff --git a/core/modules/startup.js b/core/modules/startup.js
index f30589c60..9a0a217b9 100644
--- a/core/modules/startup.js
+++ b/core/modules/startup.js
@@ -16,6 +16,7 @@ exports.startup = function() {
 	var modules,n,m,f,commander;
 	// This should be somewhere else
 	if($tw.browser) {
+		$tw.browser.unHyphenateCss = document.body.style["background-color"] === undefined;
 		$tw.browser.prefix = document.body.style.webkitTransform !== undefined ? "webkit" : 
 							document.body.style.MozTransform !== undefined ? "Moz" :
 							document.body.style.OTransform !== undefined ? "O" : null;
diff --git a/core/modules/treenodes/element.js b/core/modules/treenodes/element.js
index 819d53240..1609edba8 100644
--- a/core/modules/treenodes/element.js
+++ b/core/modules/treenodes/element.js
@@ -96,7 +96,7 @@ Element.prototype.renderInDom = function(parentDomNode,insertBefore) {
 					element.className = v.join(" "); 
 				} else if (typeof v === "object") { // ...or objects other than style?
 					for(var p in v) {
-						element.style[p] = v[p];
+						element.style[$tw.utils.unHyphenateCss(p)] = v[p];
 					}
 				} else {
 					element.setAttribute(a,v);
diff --git a/core/modules/utils.js b/core/modules/utils.js
index 624b1b59e..8693efc75 100644
--- a/core/modules/utils.js
+++ b/core/modules/utils.js
@@ -299,6 +299,19 @@ exports.applyStyleSheet = function(id,css) {
 	}
 };
 
+/*
+Convert a hyphenated CSS property name into a camel case one
+*/
+exports.unHyphenateCss = function(propName) {
+	if($tw.browser.unHyphenateCss) {
+		return propName.replace(/-([a-z])/gi, function(match0,match1) {
+		    return match1.toUpperCase();
+		});
+	} else {
+		return propName;
+	}
+};
+
 /*
 Parse a version number string of the form "1.2.3", "1.2.3.a4", or "1.2.3.b4" into:
 	{major: <number>, minor: <number>, revision: <number>, alpha: <number>, beta: <number>}