For those of you using this function to target MSIE, a better idea maybe to use MSIE specific conditional comments. More info: <http://msdn.microsoft.com/en-us/library/ms537512%28VS.85%29.aspx>.
For example to indicate your disregard for users of MSIE 6 or earlier:
<!--[if lt IE 7]>It appears that you are using a <em>very</em> old version of MS Internet Explorer (MSIE). If you seriously want to continue to use MSIE, at least <a href="http://www.microsoft.com/windows/internet-explorer/">upgrade</a>.<![endif]-->