I'm not sure if this is something that can easily be
repaired or what not, but myself and another programmer
ran in to a problem converting some legacy software to
PHP (from an antiquated language called iHTML). We are
using id based sessions throughout the site, and on one
page we have PHP outputing we have a URL which says:

doc.write("&nbsp;<a
href=javascript:top.openHelp('http://help.internetstore.com/" +
foldersNode[4] + "')><img
src='http://assets.internetstore.com/help2.gif' border=0></a> <a
class=mainlink href=\"javascript:top.redrawTree("+ foldersNode[5] +",'"+
foldersNode[6] +"','"+ foldersNode[4] +"','"+ foldersNode[3]
+"')\">"+foldersNode[3]+"</a></td></tr>")

And after the Session URL Rewriter gets through with it, we get:

doc.write("&nbsp;<a
href="javascript:top.openHelp("'http://help.internetstore.com/" +
foldersNode[4] + "')><img
src='http://assets.internetstore.com/help2.gif' border=0></a> <a
class="mainlink"
href="\?sid=47388ff232bb66e8a37d9486502634bf""javascript:top.redrawTree("+ foldersNode[5] +",'"+ foldersNode[6] +"','"+ foldersNode[4] +"','"+ foldersNode[3] +"')\">"+foldersNode[3]+"</a></td></tr>")

And that one throws Javascript errors.
We know we can turn off URL Rewrite on that one page or the entire site, or the entire server, are possibly even use cookies, but it would be nice if it would not attempt to parse it, since it does so incorrectly.