This line of code is returning a W3C validation error:
<a href="" rel="nofollow" target="_blank"
		resizable=yes'); return false;">Contact Us</a></p>
The error returned is:
Bad value'','Table','width=500,height=600,scrollbars=yes,↩ resizable=yes'); for attribute onclick on element a: unterminated string literal
What's the solution? The page that code is on loads and works as intended. Is this one of those validation quirks you just have to ignore?