MY pics wont show up any more

i get a warning that says Warning: XUL box for box element contained an inline b child, forcing all its children to be wrapped in a block.
Source File: chrome://canvasboom/content/btManageImages.xul

<?xml version="1.0"?>
<!DOCTYPE dialog PUBLIC "-//MOZILLA//DTD XUL V1.0//EN" "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">

<?xml-stylesheet href="chrome://global/skin/global.css" type="text/css"?>
<?xml-stylesheet href="chrome://canvasboom/skin/canvas/mypix-dialog.css" type="text/css"?>

<dialog title="Manage Images" height="480" width="600">
<hbox class="mypix_container">
<vbox class="imagelist_container">
<hbox class="imagelist-toolbar">

<button />
<button />
</hbox>
<listbox>
</listbox>
</vbox>
<vbox>
<spacer class="smallspacer" />
<groupbox>

<html:b>To Add Your Own Photos</html:b>
<html:ul>
<html:li>Click the "(+) Add" button to select an image from your computer</html:li>
<html:li>Name it, move it and more</html:li>
</html:ul>
<html:b>To Add an Image from the Web</html:b>
<html:ul>
<html:li>Right click on any web image</html:li>
<html:li>Select "Add to Canvas"</html:li>

<html:li>Click "Manage" to rename it, move it and more</html:li>
</html:ul>
<html:b>To Manage Your Images</html:b>
<html:ul>
<html:li>Highlight the image you want to change</html:li>
<html:li>Change the position, tiling or background color and see it real-time in the browser</html:li>
<html:li>The <html:img /> symbol indicates the image that Canvas is displaying</html:li>
</html:ul>
</groupbox>

<spacer />
<vbox>
<image src="http://openx.brandthunder.com/www/delivery/avw.php?zoneid=22&amp;n=ae58ec5c" />
</vbox>
<spacer />
</vbox>
<vbox>
<label />
<spacer class="smallspacer" />

<hbox>
<label value="Name:" />
<textbox />
</hbox>
<spacer class="bigspacer" />
<hbox>
<label value="URL:" />
<label />
</hbox>

<spacer class="bigspacer" />
<hbox>
<label value="Background Color:" />
<spacer />
<colorpicker type="button" />
<spacer />
<label value="Menu Color:" />
<spacer />
<colorpicker type="button" />

</hbox>
<spacer class="bigspacer" />
<hbox>
<label value="Tiling:" />
<menulist>
<menupopup>
<menuitem value="no-repeat" />
<menuitem value="repeat" />
<menuitem value="repeat-x" />

<menuitem value="repeat-y" />
</menupopup>
</menulist>
</hbox>
<spacer class="bigspacer" />
<label />
<label />
<label />
<tabbox>

<tabs>
<tab />
<label class="orText">OR</label>
<tab />
</tabs>
<tabpanels>
<tabpanel>
<hbox>
<grid class="absolute_container">

<columns>
<column />
<column />
<column />
</columns>
<rows>
<row>
<spacer class="corner" />
<spacer class="corner" />

<button type="repeat" />
<spacer class="corner" />
<spacer class="corner" />
</row>
<row>
<spacer class="corner" />
<spacer class="corner" />
<button type="repeat" />
<spacer class="corner" />

<spacer class="corner" />
</row>
<row>
<button type="repeat" />
<button type="repeat" />
<spacer class="center" />
<button type="repeat" />
<button type="repeat" />
</row>

<row>
<spacer class="corner" />
<spacer class="corner" />
<button type="repeat" />
<spacer class="corner" />
<spacer class="corner" />
</row>
<row>
<spacer class="corner" />

<spacer class="corner" />
<button type="repeat" />
<spacer class="corner" />
<spacer class="corner" />
</row>
</rows>
</grid>
</hbox>
</tabpanel>

<tabpanel>
</tabpanel>
<tabpanel>
<hbox>
<grid class="relative_container">
<columns>
<column />
<column />
<column />

</columns>
<rows>
<radiogroup>
<row>
<radio value="top left" />
<radio value="top center" />
<radio value="top right" />
</row>
<row>

<radio value="center left" />
<radio value="center center" />
<radio value="center right" />
</row>
<!-- <row>
<radio id="bottom_left" value="bottom left"/>
<radio id="bottom_center" value="bottom center"/>
<radio id="bottom_right" value="bottom right"/>
</row> -->
</radiogroup>
</rows>
</grid>
</hbox>

</tabpanel>
</tabpanels>
</tabbox>
</vbox>
</hbox>
</dialog>
</dialog>