You can add scrollbars to blocks and make all the blocks of the same size. It works on IE and Firefox.Here is how you do it.Open you theme stylesheet ( style.css ) & add following code:

div.inner {
}

div.outer {
height: 200px;
overflow-y: scroll;
}

This will add horizontal scroll bar. If you wish to enter a vertical scrollbar too.. add the following line.

div.outer {
height: 200px;
overflow-y: scroll;
overflow-x: scroll;
}

Since outer div is always going to be bigger than inner div it adds a scroll bar.

Then open block.tpl.php and find the code

<?php print $block->content; ?>

& replace with code below.

<div class=”outer”>
<div class=”inner”>
<?php print $block->content; ?></div>
</div>

You are all set !… Post your comments on how this helped you.