Bookmarkify Plug-in's w3c Validation errors

[DaHLiA]

This is weird to me.
I installed Bookmarkify plug-in for my wordpress blog recently and it is giving me some crap w3c validation errors.
When I deactivated it, my site has passed XHTML 1.0 Transitional at W3C site.

The errors it causes are like:

Line 88, Column 34131: required attribute "alt" not specified .
…ns.com/images/feed-icon-14x14.png' />If you like this then please subscribe

Line 88, Column 34588: cannot generate system identifier for general entity "loc" .
…b/a/emailverifySubmit?feedId=1891094&loc=en_US' rel='nofollow'><b>Email feed<

Line 88, Column 34591: reference not terminated by REFC delimiter .
Line 88, Column 34591: reference to external entity in attribute value .

and a lot more of this sort.

Line 88 is a junk like this

<div class='bookmarkify'><a name='bookmarkify'></a><div class='title' title='Use these links to share this page with others' onclick='document.getElementById("bookmarkifyMore1 ").style.display="block"; return false;'>Bookmark:</div><div class='morebox' id='bookmarkifyMore1' style='z-index:9999; display:none; position:absolute; width:600px; border:3px outset; background:whitesmoke; padding:5px; font-size:12px; font-family:verdana,arial;'><div style='font-size:12px; font-weight:bold; color:black; text-align:left; border-top:1px dotted gray; padding:3px;'>Bookmark and Share This Page | <a style='border: none; font-size:11px; font-weight:normal; background:whitesmoke; color:blue; text-decoration:none;' rel='nofollow' href='http://bhavanikannan.info/2008/04/16/demonoid-is-back/#bookmarkify' onclick='document.getElementById("bookmarkifyMore1 ").style.display="none"; return false;'>&laquo; Close</a></div>

and it grows more to three pages.

However this plug-in seems to work great with no w3c errors in my other pal's site.
Any clue how can I resolve this, please?

[htmlbasictutor]

You are missing a couple of closing div tags. This validates:

<div class='bookmarkify'> <a name='bookmarkify'></a>
<div class='title' title='Use these links to share this page with others' onclick='document.getElementById("bookmarkifyMore1 ").style.display="block"; return false;'>Bookmark:</div>
<div class='morebox' id='bookmarkifyMore1' style='z-index:9999; display:none; position:absolute; width:600px; border:3px outset; background:whitesmoke; padding:5px; font-size:12px; font-family:verdana,arial;'></div>
<div style='font-size:12px; font-weight:bold; color:black; text-align:left; border-top:1px dotted gray; padding:3px;'>Bookmark
and Share This Page | <a style='border: none; font-size:11px; font-weight:normal; background:whitesmoke; color:blue; text-decoration:none;' rel='nofollow' href='http://bhavanikannan.info/2008/04/16/demonoid-is-back/#bookmarkify' onclick='document.getElementById("bookmarkifyMore1 ").style.display="none"; return false;'>&laquo;
Close</a></div>
</div>

[DaHLiA]

but hey, how do I change it? I dont think I can
Bokmarkify is a PHP plug-in for WP and it's PHP file does not have these codes (which W3C says invalid) at all!

[htmlbasictutor]

Bookmarkify Updated for Valid Markup

Do you have the latest version?

The latest version of Bookmarkify, 0.8.8, is now available.

On another page it says:

Current Version: 0.9.1 (beta)
Last Released: 2008-03-27

http://www.gara.com/projects/bookmarkify/

[DaHLiA]

I uninstalled that plug-in mate and using Social Boomarking now. It is not giving any errors. My site passed XHTML 1.0 Strict now