.headerImg {
    margin-top: 10px;
    table-layout: fixed;
    word-wrap: break-word;
    overflow: hidden;
}


    .headerImg img {
        display: block;
        margin: auto;
        width: 100%;
        height: 100%;
        /*max-width: 300px;*/
        width: expression(this.width > 400 ? "400px" : this.width);
        overflow: hidden;
    }