Изнасиловать осла

<div class="block1">
<div class="block2">Block 2</div>
<div class="block3">Block 3</div>
</div>

.block1 {
	zoom: 1;
	filter: alpha(opacity=0);
	opacity: 0; 
}
.block1:hover {
	zoom: 1;
	filter: alpha(opacity=50);
	opacity: 0.5;
	-webkit-transition: all ease 0.8s;
    -moz-transition: all ease 0.8s;
    transition: all ease 0.8s;
}

.block1, .block2, .block3, {
	zoom: 1;
	filter: alpha(opacity=0);
	opacity: 0; 
}
.block1:hover, .block2:hover, .block3:hover {
	zoom: 1;
	filter: alpha(opacity=50);
	opacity: 0.5;
	-webkit-transition: all ease 0.8s;
    -moz-transition: all ease 0.8s;
    transition: all ease 0.8s;
}