Chrome Ext: https://chrome.google.com/webstore/detail/custom-javascript-for-web/poakhlngfciodnhlhhgnaaelnpjljija
with jquery
$( function (){
$('tr.lista2').find('td:nth-child(2)').each (function() {
var link = $('a',this).attr('onmouseover').replace('return overlib(\'<img src=\\\'//','').replace('\\\' border=0>\')','');
$('a',this).removeAttr('onmouseover').removeAttr('onmouseout');
var a = link;
$(this).append('<br><img width="50%" align="center" src="https://'+a+'">');
});
});