Need to vertically align images within a containing box like this:

```
   <span class="image-box"><img src="/1_thumb.jpg"></span>

```

with this: 

```
.image-box{
  width: 75px;
  height: 75px;
  display: block;
  float: left;
  text-align: center;
  // ????
  vertical-align: text-top;
}

```

The vertical-align is not working correcty. How would I align this?

thx