bfe_video_bigthumb.py
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	# -- coding: utf-8 --
	##
	## This file is part of Invenio.
	## Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 CERN.
	##
	## Invenio is free software; you can redistribute it and/or
	## modify it under the terms of the GNU General Public License as
	## published by the Free Software Foundation; either version 2 of the
	## License, or (at your option) any later version.
	##
	## Invenio is distributed in the hope that it will be useful, but
	## WITHOUT ANY WARRANTY; without even the implied warranty of
	## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	## General Public License for more details.
	##
	## You should have received a copy of the GNU General Public License
	## along with Invenio; if not, write to the Free Software Foundation, Inc.,
	## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
	"""BibFormat element - Creates the <img> element of the big thumbnail
	"""


	def format_element(bfo, z_field="POSTER"):
	""" Called bz Bibformat to create the element.
	"""
	fields = bfo.fields('8564_')
	if fields:
	for field in fields:
	if field.get('z') == z_field:
	url = field.get('u', '')
	alt = field.get('y', '')
	return '<img src=\"%s\" alt=\"%s\"/>' % (url, alt)

	def escape_values(bfo):
	"""
	Called by BibFormat in order to check if output of this element
	should be escaped.
	"""
	return