Edit in JSFiddle

div:nth-child(1) { background-image: url(http://lorempixel.com/1200/1200/sports/1) }
div:nth-child(3) { background-image: url(http://lorempixel.com/1200/1200/sports/2) }
div:nth-child(5) { background-image: url(http://lorempixel.com/1200/1200/sports/3) }

div {
    background-attachment: fixed;
    height: 300px;
}

<div></div>
<div>foros</div>
<div></div>
<div>del</div>
<div></div>
<div>web</div>