.annotationLayer .linkAnnotation > a {
    position: absolute;
    font-size: 1em;
    top: -1px;
    left: -2px;
    width: 100%;
    height: 100%;
    padding: 1px 2px;
    background-color: #f00;
    opacity: 0.1;
}
.annotationLayer .linkAnnotation > a:hover {
    opacity: 0.2;
}

a:-webkit-any-link {
    text-decoration: none;
}
a:-moz-any-link {
    text-decoration: none;
}
a:-webkit-any-link {
    text-decoration: none;
}
a:-ms-any-link {
    text-decoration: none;
}
a {
    text-decoration: none;
}