html:

    <div class="cajaexterior">
      <div id="ceai"></div>
      <div id="cead"></div>
      <div id="cecontenido">


css:

    #ceai{
        background: url('/cp/images/en/main/esq_med12.gif') no-repe\
at top left;
        width: 100%;
        height: 14px;
        font-size: 1px;

    }

    #cead {
        background: url('/cp/imagesen/main/esq_med13.gif') no-repe\
at top left;
        width: 100%;
        height: 14px;
        font-size: 1px;
    }