This is absolutely fascinating to me right now!
span.verti{
-moz-transform: rotate(-90deg); /* FF3.5+ */
-o-transform: rotate(-90deg); /* Opera 10.5 */
-webkit-transform: rotate(-90deg); /* Saf3.1+, Chrome */
filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=2);
filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=3); /*IE6,IE7 */
-ms-filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=3);
writing-mode:lr-bt;
-ms-writing-mode:lr-bt;
filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=3);
opacity:1 !important;
}
Example of the image in Firefox:
Example of the image in Internet Explorer 9: