\begin{overpic}[width=0.49\textwidth]{CBK}
\put(1,74){\colorbox{white}{(\sublabel{CBK}) \href{http://dream.misasa.okayama-u.ac.jp/?q=20130809084510-413318}{CBK}}}
%%(\subref{CBK}) \href{CBK}
\color{red}
\end{overpic}
<?xml version="1.0" encoding="UTF-8"?>
<acquisitions>
</acquisitions>