Utilizando o firefox as letras somem, pois o color:transparent funfa, mas no internet explorer o problema permanece.
veja:

os códigos em imageset.cfg estão assim:
Código: Selecionar todos
img_button_pm_forward = encaminhar.gif*59*59
img_button_pm_new = novamp.gif*59*59
img_button_pm_reply = responder.gif*59*59Código: Selecionar todos
.buttons {
float: left;
width: auto;
height: auto;
}
/* Rollover state */
.buttons div {
float: left;
margin: 0 5px 0 0;
background-position: 0 100%;
}
/* Rolloff state */
.buttons div a {
display: block;
width: 100%;
height: 100%;
color: transparent;
background-position: 0 0;
position: relative;
overflow: hidden;
}
/* Hide <a> text and hide off-state image when rolling over (prevents flicker in IE) */
/*.buttons div span { display: none; }*/
/*.buttons div a:hover { background-image: none; }*/
.buttons div span { position: absolute; width: 100%; height: 100%; cursor: pointer;}
.buttons div a:hover span { background-position: 0 100%; }
/* Big button images */
.reply-icon span { background: transparent none 0 0 no-repeat; }
.post-icon span { background: transparent none 0 0 no-repeat; }
.locked-icon span { background: transparent none 0 0 no-repeat; }
.pmreply-icon span { background: none 0 0 no-repeat; }
.newpm-icon span { background: none 0 0 no-repeat; }
.forwardpm-icon span { background: none 0 0 no-repeat; }
/* Set big button dimensions */
.buttons div.reply-icon { width: {IMG_BUTTON_TOPIC_REPLY_WIDTH}px; height: {IMG_BUTTON_TOPIC_REPLY_HEIGHT}px; }
.buttons div.post-icon { width: {IMG_BUTTON_TOPIC_NEW_WIDTH}px; height: {IMG_BUTTON_TOPIC_NEW_HEIGHT}px; }
.buttons div.locked-icon { width: {IMG_BUTTON_TOPIC_LOCKED_WIDTH}px; height: {IMG_BUTTON_TOPIC_LOCKED_HEIGHT}px; }
.buttons div.pmreply-icon { width: {IMG_BUTTON_PM_REPLY_WIDTH}px; height: {IMG_BUTTON_PM_REPLY_HEIGHT}px; }
.buttons div.newpm-icon { width: {IMG_BUTTON_PM_NEW_WIDTH}px; height: {IMG_BUTTON_PM_NEW_HEIGHT}px; }
.buttons div.forwardpm-icon { width: {IMG_BUTTON_PM_FORWARD_WIDTH}px; height: {IMG_BUTTON_PM_FORWARD_HEIGHT}px; }


