diff --git a/src/overlay.js b/src/overlay.js
index 0bdbbf34..0dd31ff3 100644
--- a/src/overlay.js
+++ b/src/overlay.js
@@ -282,7 +282,10 @@
                 style.left     = position.x + "px";
                 style.top      = position.y + "px";
                 style.position = "absolute";
-                style.display  = 'block';
+
+		if (style.display != 'none') {
+                    style.display  = 'block';
+		}
 
                 if ( scales ) {
                     style.width  = size.x + "px";