diff --git a/src/ecmascript/spidermonkey/element.cpp b/src/ecmascript/spidermonkey/element.cpp
index f80db5f9d..eadee7587 100644
--- a/src/ecmascript/spidermonkey/element.cpp
+++ b/src/ecmascript/spidermonkey/element.cpp
@@ -25,6 +25,7 @@
 #include "document/forms.h"
 #include "document/libdom/corestrings.h"
 #include "document/libdom/mapa.h"
+#include "document/libdom/renderer2.h"
 #include "document/view.h"
 #include "ecmascript/ecmascript.h"
 #include "ecmascript/spidermonkey/attr.h"
@@ -69,6 +70,7 @@ static bool element_get_property_childElementCount(JSContext *ctx, unsigned int
 static bool element_get_property_childNodes(JSContext *ctx, unsigned int argc, JS::Value *vp);
 static bool element_get_property_className(JSContext *ctx, unsigned int argc, JS::Value *vp);
 static bool element_set_property_className(JSContext *ctx, unsigned int argc, JS::Value *vp);
+static bool element_get_property_clientHeight(JSContext *ctx, unsigned int argc, JS::Value *vp);
 static bool element_get_property_clientLeft(JSContext *ctx, unsigned int argc, JS::Value *vp);
 static bool element_get_property_clientTop(JSContext *ctx, unsigned int argc, JS::Value *vp);
 static bool element_get_property_dir(JSContext *ctx, unsigned int argc, JS::Value *vp);
@@ -149,6 +151,7 @@ JSPropertySpec element_props[] = {
 	JS_PSG("childElementCount",	element_get_property_childElementCount, JSPROP_ENUMERATE),
 	JS_PSG("childNodes",	element_get_property_childNodes, JSPROP_ENUMERATE),
 	JS_PSGS("className",	element_get_property_className, element_set_property_className, JSPROP_ENUMERATE),
+	JS_PSG("clientHeight",	element_get_property_clientHeight, JSPROP_ENUMERATE),
 	JS_PSG("clientLeft",	element_get_property_clientLeft, JSPROP_ENUMERATE),
 	JS_PSG("clientTop",	element_get_property_clientTop, JSPROP_ENUMERATE),
 	JS_PSGS("dir",	element_get_property_dir, element_set_property_dir, JSPROP_ENUMERATE),
@@ -578,6 +581,80 @@ element_get_property_className(JSContext *ctx, unsigned int argc, JS::Value *vp)
 	return true;
 }
 
+static bool
+element_get_property_clientHeight(JSContext *ctx, unsigned int argc, JS::Value *vp)
+{
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
+#endif
+	JS::CallArgs args = CallArgsFromVp(argc, vp);
+	JS::RootedObject hobj(ctx, &args.thisv().toObject());
+	struct view_state *vs;
+	JS::Realm *comp = js::GetContextRealm(ctx);
+
+	if (!comp) {
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s %d\n", __FILE__, __FUNCTION__, __LINE__);
+#endif
+		return false;
+	}
+	struct ecmascript_interpreter *interpreter = (struct ecmascript_interpreter *)JS::GetRealmPrivate(comp);
+
+	/* This can be called if @obj if not itself an instance of the
+	 * appropriate class but has one in its prototype chain.  Fail
+	 * such calls.  */
+	if (!JS_InstanceOf(ctx, hobj, &element_class, NULL)) {
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s %d\n", __FILE__, __FUNCTION__, __LINE__);
+#endif
+		return false;
+	}
+	vs = interpreter->vs;
+
+	if (!vs) {
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s %d\n", __FILE__, __FUNCTION__, __LINE__);
+#endif
+		return false;
+	}
+	dom_node *el = (dom_node *)JS::GetMaybePtrFromReservedSlot<dom_node>(hobj, 0);
+
+	if (!el) {
+		args.rval().setNull();
+		return true;
+	}
+	struct document_view *doc_view = vs->doc_view;
+	struct document *document = doc_view->document;
+	struct session *ses;
+
+	if (!document) {
+		args.rval().setInt32(0);
+		return true;
+	}
+	int offset = find_offset(document->element_map_rev, el);
+
+	if (offset <= 0) {
+		args.rval().setInt32(0);
+		return true;
+	}
+	struct node_rect *rect = get_element_rect(document, offset);
+
+	if (!rect) {
+		args.rval().setInt32(0);
+		return true;
+	}
+	ses = doc_view->session;
+
+	if (!ses) {
+		args.rval().setInt32(0);
+		return true;
+	}
+	int dy = int_max(0, (rect->y1 + 1 - rect->y0) * ses->tab->term->cell_height);
+	args.rval().setInt32(dy);
+
+	return true;
+}
+
 static bool
 element_get_property_clientLeft(JSContext *ctx, unsigned int argc, JS::Value *vp)
 {