Hi,
I’ve found a way to show transparency.
Simply added the following code to the index.php file :
<!--[if IE]>
<style type="text/css">
.slider-post-content-block, .featured-slider-full .slider-post-title {
background:transparent;
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#b9000000,endColorstr=#b9000000);
zoom: 1;
}
</style>
<![endif]-->