I have tried your image rollover code and can't validate...

w3,

http://jamestowntrolley.org/houses/jamestown_houses_344_e4thz.html

Is the URL for one of the pages I am trying to validate.  Have been 
tedioiusly working through my few self-made sites to validate them and 
have discovered this problem. 

I tried the code you provide for an image rollover at:  
http://www.w3schools.com/js/js_animation.asp  and when I validate the 
URL above I get:

Errorthere is no attribute X
You have used the attribute named above in your document, but the 
document type you are using does not support that attribute for this 
element. This error is often caused....

    * Line 65
      <http://validator.w3.org/check?uri=http%3A%2F%2Fjamestowntrolley.org%2Fhouses%2Fjamestown_houses_344_e4thz.html&charset=%28detect+automatically%29&doctype=Inline&group=1#line-65>,
      column 65: there is no attribute "NAME"

....jamestown_houses_344_e4thz.jpg" name="b1" width="600" height="355" onmouseove

I then did a source check on some of your pages to see if I could get a 
clue from them.  When I didn't get a clue, I tried validating some of 
your pages and found that some were not valid. 

My questions ( RE: second question, I am not trying to be/act smart, I 
just want to learn...):

    * How do I eliminate this 'NAME' attribute error so I can use the
      rollover and also have the page be valid?
    * Why don't some of your pages pass validation?


Thanks,
Bob Johnston
Jamestown, NY