diff --git a/content/content.c b/content/content.c
index 61b8cd1c9..927269441 100644
--- a/content/content.c
+++ b/content/content.c
@@ -109,15 +109,13 @@ static const struct handler_entry handler_map[] = {
 		html_add_instance, html_remove_instance, html_reshape_instance},
 	{textplain_create, textplain_process_data, textplain_convert,
 		textplain_revive, textplain_reformat, textplain_destroy, 0, 0, 0, 0},
+	{css_create, css_process_data, css_convert, css_revive,
+		css_reformat, css_destroy, 0, 0, 0, 0},
 #ifdef riscos
 #ifdef WITH_JPEG
 	{jpeg_create, jpeg_process_data, jpeg_convert, jpeg_revive,
 		jpeg_reformat, jpeg_destroy, jpeg_redraw, 0, 0, 0},
 #endif
-#endif
-	{css_create, css_process_data, css_convert, css_revive,
-		css_reformat, css_destroy, 0, 0, 0, 0},
-#ifdef riscos
 #ifdef WITH_PNG
 	{nspng_create, nspng_process_data, nspng_convert, nspng_revive,
 		nspng_reformat, nspng_destroy, nspng_redraw, 0, 0, 0},
diff --git a/content/content.h b/content/content.h
index d5adf1a6f..7235011a4 100644
--- a/content/content.h
+++ b/content/content.h
@@ -28,6 +28,7 @@
 #include "libxml/HTMLparser.h"
 #include "netsurf/utils/config.h"
 #include "netsurf/content/cache.h"
+#include "netsurf/content/content_type.h"
 #include "netsurf/content/fetch.h"
 #include "netsurf/content/other.h"
 #include "netsurf/css/css.h"
@@ -56,38 +57,6 @@
 #endif
 
 
-/** The type of a content. */
-typedef enum {
-	CONTENT_HTML,
-	CONTENT_TEXTPLAIN,
-#ifdef riscos
-#ifdef WITH_JPEG
-	CONTENT_JPEG,
-#endif
-#endif
-	CONTENT_CSS,
-#ifdef riscos
-#ifdef WITH_PNG
-	CONTENT_PNG,
-#endif
-#ifdef WITH_GIF
-	CONTENT_GIF,
-#endif
-#ifdef WITH_SPRITE
-	CONTENT_SPRITE,
-#endif
-#ifdef WITH_DRAW
-	CONTENT_DRAW,
-#endif
-#ifdef WITH_PLUGIN
-	CONTENT_PLUGIN,
-#endif
-#endif
-	CONTENT_OTHER,
-	CONTENT_UNKNOWN  /**< content-type not received yet */
-} content_type;
-
-
 /** Used in callbacks to indicate what has occurred. */
 typedef enum {
 	CONTENT_MSG_LOADING,   /**< fetching or converting */
diff --git a/content/content_type.h b/content/content_type.h
new file mode 100644
index 000000000..fbafe9e6b
--- /dev/null
+++ b/content/content_type.h
@@ -0,0 +1,51 @@
+/*
+ * This file is part of NetSurf, http://netsurf.sourceforge.net/
+ * Licensed under the GNU General Public License,
+ *                http://www.opensource.org/licenses/gpl-license
+ * Copyright 2003 James Bursa <bursa@users.sourceforge.net>
+ */
+
+/** \file
+ * Declaration of content_type enum.
+ *
+ * The content_type enum is defined here to prevent cyclic dependencies.
+ */
+
+#ifndef _NETSURF_DESKTOP_CONTENT_TYPE_H_
+#define _NETSURF_DESKTOP_CONTENT_TYPE_H_
+
+#include "netsurf/utils/config.h"
+
+
+/** The type of a content. */
+typedef enum {
+	CONTENT_HTML,
+	CONTENT_TEXTPLAIN,
+	CONTENT_CSS,
+#ifdef riscos
+#ifdef WITH_JPEG
+	CONTENT_JPEG,
+#endif
+#ifdef WITH_PNG
+	CONTENT_PNG,
+#endif
+#ifdef WITH_GIF
+	CONTENT_GIF,
+#endif
+#ifdef WITH_SPRITE
+	CONTENT_SPRITE,
+#endif
+#ifdef WITH_DRAW
+	CONTENT_DRAW,
+#endif
+#ifdef WITH_PLUGIN
+	CONTENT_PLUGIN,
+#endif
+#endif
+	/* these must be the last two */
+	CONTENT_OTHER,
+	CONTENT_UNKNOWN  /**< content-type not received yet */
+} content_type;
+
+
+#endif
diff --git a/render/box.c b/render/box.c
index 11fa0b07e..63747004b 100644
--- a/render/box.c
+++ b/render/box.c
@@ -676,7 +676,7 @@ struct css_style * box_get_style(struct content ** stylesheet,
 }
 
 
-/**
+/*
  * Special case elements
  *
  * These functions are called by convert_xml_to_box when an element is being
@@ -714,6 +714,12 @@ struct result box_body(xmlNode *n, struct status *status,
 	return (struct result) {box, 1};
 }
 
+static const content_type image_types[] = {
+#ifdef riscos
+	CONTENT_JPEG, CONTENT_PNG, CONTENT_GIF,	CONTENT_SPRITE, CONTENT_DRAW,
+#endif
+	CONTENT_UNKNOWN };
+
 struct result box_image(xmlNode *n, struct status *status,
 		struct css_style *style)
 {
@@ -747,7 +753,7 @@ struct result box_image(xmlNode *n, struct status *status,
 	xmlFree(s);
 
 	/* start fetch */
-	html_fetch_object(status->content, url, box);
+	html_fetch_object(status->content, url, box, image_types);
 
 	return (struct result) {box, 0};
 }
@@ -1062,7 +1068,8 @@ struct result box_input(xmlNode *n, struct status *status,
 	        if ((s = (char *) xmlGetProp(n, (const xmlChar*) "src"))) {
 	                url = url_join(s, status->content->data.html.base_url);
 	                if (url)
-		                html_fetch_object(status->content, url, box);
+		                html_fetch_object(status->content, url, box,
+		                		image_types);
 	                xmlFree(s);
 	        }
 	}
@@ -2158,7 +2165,7 @@ bool plugin_decode(struct content* content, char* url, struct box* box,
    * when we fetch it (if the type was not specified or is different to that
    * given in the attributes).
    */
-   html_fetch_object(content, url, box);
+   html_fetch_object(content, url, box, 0);
 
    return true;
 }
diff --git a/render/html.c b/render/html.c
index 9e447e4ae..476c8b6f2 100644
--- a/render/html.c
+++ b/render/html.c
@@ -28,6 +28,8 @@ static void html_head(struct content *c, xmlNode *head);
 static void html_find_stylesheets(struct content *c, xmlNode *head);
 static void html_object_callback(content_msg msg, struct content *object,
 		void *p1, void *p2, const char *error);
+static bool html_object_type_permitted(const content_type type,
+		const content_type *permitted_types);
 
 
 void html_create(struct content *c, const char *params[])
@@ -427,7 +429,8 @@ void html_find_stylesheets(struct content *c, xmlNode *head)
 }
 
 
-void html_fetch_object(struct content *c, char *url, struct box *box)
+void html_fetch_object(struct content *c, char *url, struct box *box,
+		const content_type *permitted_types)
 {
 	unsigned int i = c->data.html.object_count;
 
@@ -436,6 +439,7 @@ void html_fetch_object(struct content *c, char *url, struct box *box)
 			(i + 1) * sizeof(*c->data.html.object));
 	c->data.html.object[i].url = url;
 	c->data.html.object[i].box = box;
+	c->data.html.object[i].permitted_types = permitted_types;
 
 	/* start fetch */
 	c->data.html.object[i].content = fetchcache(url, c->url,
@@ -467,16 +471,21 @@ void html_object_callback(content_msg msg, struct content *object,
 	struct content *c = p1;
 	unsigned int i = (unsigned int) p2;
 	struct box *box = c->data.html.object[i].box;
+
 	switch (msg) {
 		case CONTENT_MSG_LOADING:
-			if (CONTENT_OTHER <= c->type) {
-				c->data.html.object[i].content = 0;
-				c->active--;
-				c->error = 1;
-				sprintf(c->status_message, "Warning: bad object type");
-				content_broadcast(c, CONTENT_MSG_STATUS, 0);
-				content_remove_user(object, html_object_callback, c, (void*)i);
-			}
+			/* check if the type is acceptable for this object */
+			if (html_object_type_permitted(object->type,
+					c->data.html.object[i].permitted_types))
+				break;
+
+			/* not acceptable */
+			c->data.html.object[i].content = 0;
+			c->active--;
+			c->error = 1;
+			sprintf(c->status_message, "Warning: bad object type");
+			content_broadcast(c, CONTENT_MSG_STATUS, 0);
+			content_remove_user(object, html_object_callback, c, (void*)i);
 			break;
 
 		case CONTENT_MSG_READY:
@@ -582,6 +591,29 @@ void html_object_callback(content_msg msg, struct content *object,
 }
 
 
+/**
+ * Check if a type is in a list.
+ *
+ * \param type the content_type to search for
+ * \param permitted_types array of types, terminated by CONTENT_UNKNOWN,
+ *              or 0 if all types except OTHER and UNKNOWN acceptable
+ * \return the type is in the list or acceptable
+ */
+
+bool html_object_type_permitted(const content_type type,
+		const content_type *permitted_types)
+{
+	if (permitted_types) {
+		for (; *permitted_types != CONTENT_UNKNOWN; permitted_types++)
+			if (*permitted_types == type)
+				return true;
+	} else if (type < CONTENT_OTHER) {
+		return true;
+	}
+	return false;
+}
+
+
 void html_revive(struct content *c, unsigned int width, unsigned int height)
 {
 	unsigned int i;
diff --git a/render/html.h b/render/html.h
index 33385a78d..f57f36ca5 100644
--- a/render/html.h
+++ b/render/html.h
@@ -8,6 +8,7 @@
 #ifndef _NETSURF_RENDER_HTML_H_
 #define _NETSURF_RENDER_HTML_H_
 
+#include "netsurf/content/content_type.h"
 #include "netsurf/css/css.h"
 #include "netsurf/render/box.h"
 #include "netsurf/utils/pool.h"
@@ -49,6 +50,9 @@ struct content_html_data {
 		char *url;
 		struct content *content;
 		struct box *box;
+		/** Pointer to array of permitted content_type, terminated by
+		 *  CONTENT_UNKNOWN, or 0 if any type is acceptable. */
+		const content_type *permitted_types;
 	} *object;
 	pool box_pool;		/**< Memory pool for box tree. */
 	pool string_pool;	/**< Memory pool for strings. */
@@ -60,7 +64,8 @@ int html_convert(struct content *c, unsigned int width, unsigned int height);
 void html_revive(struct content *c, unsigned int width, unsigned int height);
 void html_reformat(struct content *c, unsigned int width, unsigned int height);
 void html_destroy(struct content *c);
-void html_fetch_object(struct content *c, char *url, struct box *box);
+void html_fetch_object(struct content *c, char *url, struct box *box,
+		const content_type *permitted_types);
 
 /* in riscos/htmlinstance.c */
 void html_add_instance(struct content *c, struct browser_window *bw,