try using this code:
infowindowtext: '<span style="font: 12px Verdana, Arial, Helvetica, sans-serif; color: black;"><?php echo str_replace("'", "\'", "<strong>Bob King Hyundai</strong><br /><strong>Address:</strong><br />1545 Silas Creek Parkway<br />Winston Salem, NC 27127-3757 USA"); ?><br /><a href="http://www.bobdunnhyundai.com" onclick="javascript: pageTracker._trackPageview('/outgoing/bobdunnmapmap');">Visit our website</a></span>',
basically, you don't need to use \' there is a php function already doing that for you;
str_replace("'", "\'",
this is causeing:
javascript: pageTracker._trackPageview(\'/outgoing/crenshawmap\')
to become:
javascript: pageTracker._trackPageview(\\'/outgoing/crenshawmap\\')