The validator should not check html tags inside <script> tags.

In validating "http://johneastman.org/", I got the following errors. 
  These occured inside a javascript section.  Furthermore I enclosed 
the script with "<-- . . . // -->" so it really shouldn't be getting 
parsed.

Thanks,
Eric

Below are the results of attempting to parse this document with an 
SGML parser.

     * Line 87, column 21:

   var closetags='</span>'
                        ^

       Error: end tag for element "SPAN" which is not open; try 
removing the end tag or check for improper nesting of elements
     * Line 103, column 50:

   ... h+'; background-color:'+countdownbgcolor+'"></span>')
                                                         ^

       Error: end tag for element "SPAN" which is not open; try 
removing the end tag or check for improper nesting of elements