Login to blank screen

A couple weeks ago I started getting the following errors when trying to login to my wordpress site (though I only got them on my laptop and was still able to login on my desktop):

Fatal error: Call to undefined function gde_t() in /home/osoproto/www/wordpress/wp-content/plugins/google-document-embedder/gviewer.php on line 173
ERROR: E72S0615.jpg :
Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘gde_conflict_check’ was given in /home/osoproto/www/wordpress/wp-includes/plugin.php on line 395

Then, a week ago, when I tried to login on either computer it just went to a blank screen. I haven’t made any changes to the site for weeks apart from adding new content while I still could. The only exception to that were two plugins I added this past week but I have since deleted them via FTP for fear that they were causing this problem. I’ve also deleted cookies and cache in my browser downloaded a fresh copy of WP and replaced the wp-config file. Nothings seems to work.

The website is: redfitz.com. And also now the Categories link on that comepage is no longer aligned.

Any ideas would be much appreciated! Thank you!

Nick