don't use thumbnail if it's not there
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@ -124,10 +124,11 @@ class BookmarkForm extends Form
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'url');
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$this->unli();
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list($width, $height) = $this->scaleImage($this->_thumbnail->width,
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$this->_thumbnail->height);
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if (!empty($this->_thumbnail)) {
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list($width, $height) = $this->scaleImage($this->_thumbnail->width,
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$this->_thumbnail->height);
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$this->out->element('img',
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array('src' => $this->_thumbnail->url,
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'class' => 'bookmarkform-thumbnail',
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