.markItUpButton1 a{background-image:url(images/bold.png);}.markItUpButton2 a{background-image:url(images/italic.png);}.markItUpButton3 a{background-image:url(images/stroke.png);}.markItUpButton4 a{background-image:url(images/picture.png);}.markItUpButton5 a{background-image:url(images/link.png);}.clean a{background-image:url(images/clean.png);}.preview a{background-image:url(images/preview.png);}