<style type="text/css">
/* for all browsers that understand min-width */
.container {position:relative; width:100%; min-width:395px;}
.holder {display:block; color:#000;}
/* min-width problem solved for IE5.5 and IE6 browsers */
* html .container {border-right:395px }
* html .holder {display:inline-block; position:relative; margin-right:-350px;}
div#cabecera { float:left; }
div.imgIzquierda { float:left; }
div.imgDerecha { float:right; }
</style>