.head .link1{background-image:url("/images/a.png")} .head .link2{background-image:url("/images/b.png");}
.head .link3{background-image:url("/images/c.png");}
.head .link4{background-image:url("/images/d.png");}
.head .link5{background-image:url("/images/e.png");}
.head .link6{background-image:url("/images/f.png");}
.head .link7{background-image:url("/images/g.png#dingo");}
.head .link8{background-image:url("/images/h.png?name=tapir");}

.http_urls { background-image: url("http://somehost.com/image.png") }
.https_urls { background-image: url("https://somehost.com/image.png") }
.data_urls { background-image: url("data:image/png:base64,0") }
.backslashes_urls { background-image: url("/images/e.png") }
