.markItUp .markItUpButton1 a {
background-image:url(images/bold.png);
}
.markItUp .markItUpButton2 a {
background-image:url(images/italic.png);
}
.markItUp .markItUpButton3 a {
background-image:url(images/underline.png);
}
.markItUp .markItUpButton4 a {
background-image:url(images/quotes.png);
}
.markItUp .markItUpButton5 a {
background-image:url(images/code.png);
}