.buyhover { }
a:link.buyhover {color: blue; background: #cccccc; text-decoraton: underline}
a:visited.buyhover {color: purple; background: #cccccc; text-decoration: underline}
a:active.buyhover {color: blue; background: #cccccc; text-decoration: underline}
a:hover.buyhover {color: blue; background: #ffff00; text-decoration: underline}