Index: gtkhtml2/libgtkhtml/document/htmldocument.c
===================================================================
--- gtkhtml2.orig/libgtkhtml/document/htmldocument.c	2006-01-21 02:24:09.000000000 +0000
+++ gtkhtml2/libgtkhtml/document/htmldocument.c	2006-01-21 04:21:37.000000000 +0000
@@ -1127,3 +1127,35 @@
 	else
 		return NULL;
 }
+
+CssStylesheet *
+html_document_add_stylesheet (HtmlDocument *document, const gchar *buffer, gint len)
+{
+	CssStylesheet *sheet;
+	HtmlStyleChange style_change;
+	
+	g_return_val_if_fail (buffer && (len > 0) && HTML_IS_DOCUMENT (document), NULL);
+	
+	/* Note: @import not supported for user stylesheets, due to
+	 * complications it would cause with removal.
+	 */
+	
+	sheet = css_parser_parse_stylesheet (buffer, len, NULL);
+	document->stylesheets = g_slist_append (document->stylesheets, sheet);
+	
+	style_change = html_document_restyle_node (document, DOM_NODE (dom_Document__get_documentElement (document->dom_document)), NULL, TRUE);
+	g_signal_emit (G_OBJECT (document), document_signals [STYLE_UPDATED], 0, DOM_NODE (dom_Document__get_documentElement (document->dom_document)), style_change);
+	
+	return sheet;
+}
+
+gboolean
+html_document_remove_stylesheet	(HtmlDocument *document, CssStylesheet *stylesheet)
+{
+	g_return_val_if_fail (stylesheet && HTML_IS_DOCUMENT (document), FALSE);
+	
+	document->stylesheets = g_slist_remove (document->stylesheets, stylesheet);
+	
+	return TRUE;
+}
+
Index: gtkhtml2/libgtkhtml/document/htmldocument.h
===================================================================
--- gtkhtml2.orig/libgtkhtml/document/htmldocument.h	2006-01-21 02:24:09.000000000 +0000
+++ gtkhtml2/libgtkhtml/document/htmldocument.h	2006-01-21 03:48:55.000000000 +0000
@@ -113,6 +113,9 @@
 void     html_document_update_focus_element (HtmlDocument *document, DomElement *element);
 DomNode *html_document_find_anchor          (HtmlDocument *doc, const gchar *anchor);
 
+CssStylesheet	*html_document_add_stylesheet	(HtmlDocument *document, const gchar *buffer, gint len);
+gboolean	html_document_remove_stylesheet	(HtmlDocument *document, CssStylesheet *stylesheet);
+
 G_END_DECLS
 
 #endif /* __HTMLDOCUMENT_H__ */