Hi Goran,
thx for your fast response!
I had a look at the link you provided and found the solution.
Just used this bit of css code and now it is working fine.
.swifty-img-widget-class img {
filter: url(filters.svg#grayscale);
/* Firefox 3.5+ */
filter: gray;
/* IE6-9 */
-webkit-filter: grayscale(1);
/* Google Chrome & Safari 6+ */
}
.swifty-img-widget-class img:hover {
filter: none;
-webkit-filter: none;
}
Thanks a lot again!