<table border="0"><tbody><tr align="left"><td>
</td><td>
IRREGARDLESS
</td> </tr> </tbody></table>
<table> <tbody><tr><td>
</td><td>
REGARDLESS
</td> </tr></tbody></table>
Regardless of what you have heard, “irregardless” is a redundancy. The suffix “-less” on the end of the word already makes the word negative. It doesn’t need the negative prefix “ir-” added to make it even more negative.
http://www.wsu.edu/~brians/errors/irregardless.html