.oaButton{
width:125px;
height:25px;
background:url(../images/oaAdmin/oa_boton.jpg) 0 0 no-repeat;
cursor:pointer;
text-align:center;
line-height:24px
}
.oaButton:hover{
background:url(../images/oaAdmin/oa_boton.jpg) 0 100% no-repeat;
}