@-moz-document url-prefix(http://www.)
{

a[href^="#"]:hover:before
{
position:relative;
content:url("data:image/gif;base64,R0lGODlhCwALAJkAAAAAAP///87t3AAAACH5BAEAAAIALAAAAAALAAsAAAIdlIMZdgDhlkgxLuhynFqr+lDdho0XhiLNszFKwhQAOw==") '';
margin-right:2px;
margin-left:-13px; /* ( 11px + {margin-right} ) * (-1) */
}

}