#katresim a img {
		filter: alpha(opacity=20);
		filter: progid:DXImageTransform.Microsoft.Alpha(opacity=20);
		-moz-opacity: 0.5; 
		opacity:0.20;
}


#katresim  a:hover img {
		filter: Alpha(Opacity=100);
		filter: progid:DXImageTransform.Microsoft.Alpha(opacity=100);
		-moz-opacity: 0.5; 
		opacity:1;
}