XHTML Validation error

It look like the function gtranslate_block will spit out that css where ever you enable the block. CSS/JS should be loaded when the module is enabled, since it's going to be display throughtout the website. As temporary solution, since I use "flag" only in gtranslate.module, starting line 186, I commented out and put the "complete" style in head.tpl.php or page.tpl.php, whereever inside your head. If you are using both or list down only, you'll find to find it and comment it accordingly.

I commented out

                case 'flags': {
				   // Don't output this here ...do it in page.tpl.php edited najibx
                   // $block_content .= '<style type="text/css">'."\n";
                   // $block_content .= "<!--\n";
                   // $block_content .= "a.gtflag {background-image:url('".base_path().drupal_get_path('module', 'gtranslate')."/gtranslate-files/".variable_get('gtranslate_flag_size', '16')."a.png');}\n";
                   // $block_content .= "a.gtflag:hover {background-image:url('".base_path().drupal_get_path('module', 'gtranslate')."/gtranslate-files/".variable_get('gtranslate_flag_size', '16').".png');}\n";
                   //  $block_content .= "-->\n";
                   //  $block_content .= '</style>';

Put this in your head

<style type="text/css"> 
<!--
a.gtflag {background-image:url('/sites/all/modules/gtranslate/gtranslate-files/24a.png');}
a.gtflag:hover {background-image:url('/sites/all/modules/gtranslate/gtranslate-files/24.png');}
-->
</style>

I am closing this issue, since Drupal 6 isn't supported anymore.