A.rollover1 {
background: url('men1.jpg');
display: block;
width: 350px;
height: 100px;
}
A.rollover1:hover {
background-position:  0  100px;
cursor:pointer; 
}


<a class="rollover1" onClick="window.open('popup/gorod.html','1','scrollbars=1,width=800,height=600,left=10,top=5')" ></a>

#get A {
background: url('men1.jpg');
display: block;
width: 350px;
height: 100px;
}


#get A:hover {
background-position:  0  100px;
cursor:pointer; 
}

<td id="get" >
<a  href=""  onClick="window.open('popup/gorod.html','1','scrollbars=1,width=800,height=600,left=10,top=5')" ></a>
</td>