Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 6554)
+++ /CKEditor/trunk/CHANGES.html	(revision 6555)
@@ -71,4 +71,5 @@
 		<li><a href="http://dev.ckeditor.com/ticket/7293">#7293</a> : The "automatic" color button is now presented correctly without focus inside the editor.</li>
 		<li><a href="http://dev.ckeditor.com/ticket/7018">#7018</a> : [IE] Combo boxes didn't have border around them.</li>
+		<li><a href="http://dev.ckeditor.com/ticket/7073">#7073</a> : Image dialog now does not allow zero height and width to be entered.</li>
 		<li>Updated the following language files:<ul>
 			<li><a href="http://dev.ckeditor.com/ticket/7124">#7124</a> : Czech;</li>
Index: /CKEditor/trunk/_source/plugins/image/dialogs/image.js
===================================================================
--- /CKEditor/trunk/_source/plugins/image/dialogs/image.js	(revision 6554)
+++ /CKEditor/trunk/_source/plugins/image/dialogs/image.js	(revision 6555)
@@ -197,5 +197,5 @@
 			var dialog = this.getDialog(),
 				value = '',
-				dimension = (( this.id == 'txtWidth' )? 'width' : 'height' ),
+				dimension = this.id == 'txtWidth' ? 'width' : 'height',
 				size = element.getAttribute( dimension );
 
@@ -637,5 +637,5 @@
 															{
 																var aMatch  =  this.getValue().match( regexGetSizeOrEmpty );
-																if ( !aMatch )
+																if ( !aMatch || aMatch[1] == 0 )
 																	alert( editor.lang.common.invalidWidth );
 																return !!aMatch;
@@ -686,5 +686,5 @@
 															{
 																var aMatch = this.getValue().match( regexGetSizeOrEmpty );
-																if ( !aMatch )
+																if ( !aMatch || aMatch[1] == 0 )
 																	alert( editor.lang.common.invalidHeight );
 																return !!aMatch;