a.linkopacity img       {
filter:alpha(opacity=50);
 -moz-opacity: 0.5; 
 opacity: 0.5;
 -khtml-opacity: 0.5;
 }
a.linkopacity:hover img {
filter:alpha(opacity=100);
-moz-opacity: 1.0;
opacity: 1.0;
-khtml-opacity: 1.0;
}

a.linkopacity75 img       {
filter:alpha(opacity=75) ;
-moz-opacity: 0.75;
opacity: 0.75;
-khtml-opacity: 0.75; 
}
a.linkopacity75:hover img {
filter:alpha(opacity=100); 
-moz-opacity: 1.0; 
opacity: 1.0;
-khtml-opacity: 1.0; 
}