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:
This will add horizontal scroll bar. If you wish to enter a vertical scrollbar too.. add the following line.
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.
<?php print $block->content; ?></div>
You are all set !… Post your comments on how this helped you.