a.ovalbutton{
background: transparent url('/_images/topmenu_h10.gif') no-repeat top left;
display: block;
float: left;
font: normal 14px Arial; /* Change 13px as desired */
line-height: 16px; /* This value + 4px + 4px (top and bottom padding of SPAN) must equal height of button background (default is 24px) */
height: 26px; /* Height of button background height */
padding-left: 11px; /* Width of left menu image */
text-decoration: none;
margin-right:10px;
}

a:link.ovalbutton, a:visited.ovalbutton, a:active.ovalbutton{
color: #000000; /*button text color*/
}

a.ovalbutton span{
background: transparent url('/_images/topmenu_h20.gif') no-repeat top right;
display: block;
padding: 5px 11px 5px 0; /*Set 11px below to match value of 'padding-left' value above*/
}

a.ovalbutton:hover{ /* Hover state CSS */
background-position: bottom left;
}

a.ovalbutton:hover span{ /* Hover state CSS */
background-position: bottom right;
color: #ffffff;
}

.buttonwrapper{ /* Container you can use to surround a CSS button to clear float */
overflow: hidden;
width: 100%;
padding-left:25px;
}