How do I align a div to the bottom of another div (in bootstrap)?

[smdsoft]

Related to my earlier question I would like to be able to align the pull-right div to the bottom of a div.I have the following markup:\[code\]<div class="container"> <div class="container"> <div class="footer-images"> <a href="http://stackoverflow.com/questions/15570022/link1"><img src="http://stackoverflow.com/questions/15570022/img1"></a> <div class="pull-right"> <a href="http://stackoverflow.com/questions/15570022/link2"><img src="http://stackoverflow.com/questions/15570022/img2"></a> <a href="http://stackoverflow.com/questions/15570022/link3"><img src="http://stackoverflow.com/questions/15570022/img3"></a> </div> </div> </div> <div class="container"> <div class="copyright"> <p>? Some Company YYYY</p> </div> </div></div>\[/code\]I can't figure out how to get the pull-right (or other div classes) to align to the bottom of the footer-images div class.