code: def downloadFileFromUrl(self, url):
  		
  		fullurl = self.baseUrl + url
  		try:
  			urlobj = urllib2.urlopen(fullurl)
  			contents = urlobj.read()
  		except urllib2.HTTPError, e:
  			self.printd("HTTP error:", e.code, url)
  			return None
  		except urllib2.URLError, e:
  			self.printd("URL error:", e.code, url)
  			return None
  		self.printd("Fetched '%s' (size %d bytes)" % (fullurl, len(contents)))
  		return contents
docs: Given a URL, download the specified file