.hover_light_dark{
opacity: 0.5;
filter: alpha(opacity=50);
no-repeat;
}
.hover_light_dark:hover {
opacity: 1;
filter: alpha(opacity=100);
}
.hover_dark_light{
opacity: 1;
filter: alpha(opacity=100);
no-repeat;
}
.hover_dark_light:hover {
opacity: 0.5;
filter: alpha(opacity=500);
}