add custom style to object tag in tinymce

view/custom_tinymce.css

@@ -33,3 +33,9 @@ scrollbar-track-color:#F5F5F5;
 
 img:-moz-broken {-moz-force-broken-image-icon:1; width:24px; height:24px}
 font[face=mceinline] {font-family:inherit !important}
+
+
+object {
+	display: block; width: 400px; 
+	background: #cccccc url(../images/plugin.png) no-repeat center center;
+}