#img_clientes{
float:left;
margin: 0px 0px 0px 0px;
padding:0px;
}
#contenido_1{
padding:0px 28px 0px 5px;
}
#contenido_02{
float:right;

}
#contenido_03{
float:right;
width:720px;
margin:0px 0px 10px 0px;
padding:0px;
background-repeat:no-repeat;
}
#contenido_04{
float:right;
width:720px;
margin:0px 0px 0px 0px;
padding:0px 0px 0px 0px;
background-image:url(../img/bgn_destacados2.gif);
background-repeat:no-repeat;
}