[forwardonly2015]

<table id="blocks_table">
    <tr>
        <td><img class="menu_block" alt="Камень" src="/constructor/blocks/stone.png"></td>
        <td><img class="menu_block" alt="Земля" src="/constructor/blocks/dirt.png"></td>
        <td><a href="#"></a></td>
    </tr>
</table>
<script>
show=function(){alert(this.src)}
;[].forEach.call(document.querySelectorAll(".menu_block"), function(block){
   block.onclick=show
})
</script>