[VE][404] Error Message Feedback

Validating http://www.lyrunedale.com/boards/read.php?1,6156
Error [404]: "character X is the first character of a delimiter but 
occurred as data"

What I used in my document was:
<select name="addbbcode12" onChange="bbfontstyle('<font face=&quot;' + 
this.form.addbbcode12.options[this.form.addbbcode12.selectedIndex].value 
+ '&quot;>', '</font>')" onMouseOver="helpline('ff')">

Error messages:

Warning /Line 751 column 62/: character "<" is the first character of a 
delimiter but occurred as data.

|..."addbbcode12" onChange="bbfontstyle('_*<*_font face=&quot;' + this.form.addbbcode

|

Warning /Line 751 column 170/: character "<" is the first character of a 
delimiter but occurred as data.

|...2.selectedIndex].value + '&quot;>', '_*<*_/font>')" onMouseOver="helpline('ff')">|


I read the help topic at http://www.w3.org/TR/xhtml1/#h-4.8, but I 
wouldn't be able to follow it if the above isn't in <script></script> 
tags, so what do I do? What I have above links to an outer Javascript 
source.