[For 1.8] MyLikes v1.0.1

[AmaZe]

Hi,

.mylikes_like {
    background-image: url(../../../images/valid.png) !important;
    filter: grayscale(100%);
	-webkit-filter: grayscale(100%);
	-moz-filter: grayscale(100%);
	-ms-filter: grayscale(100%);
	-o-filter: grayscale(100%);
}

Great Plugin... but there is a Problem with grayscale.
It works with Chrome, but when I use Firefox the Icon stay colored. Who can help?