Unable to modify Logo Icon Link in bfa_header_configuration

Unable to modify Logo Icon Link in bfa_header_configuration:

If I change this:

if ( $bfa_ata['logo'] != "" )
{
echo '<td ' . $header_rowspan . 'valign="middle" class="logoarea-logo"><a href=""><img class="logo" src="';

to:

if ( $bfa_ata['logo'] != "" )
{
echo '<td ' . $header_rowspan . 'valign="middle" class="logoarea-logo"><a href="mysite.com"><img class="logo" src="';


The link on the logo merely appends to the current page.
So if a user is on:

http://mysite.com/page9
and clicks on logo
user will encounter a 404 page not found because URL is appended to:

http://mysite.com/page9/mysite.com

I would like to direct users back to home page.

Please help.

Thanks.