.buttonStyle
{
    width:64px;
    height:22px;
    line-height:22px;
    color:red;
    text-align:center;
    background:url(../Images/zDialog/buticon.gif) no-repeat left top;
    border:0;
    font-size:12px;
}
.buttonStyle:hover
{
    background:url(../Resources/Images/zDialog/buticon.gif) no-repeat left -23px;
}