hide if on front page and on taxonomy pages i wondering how i can hide $title if its on the front page and on taxonomy pages, I only want it to show on nodes.

here my code, I dont know if im close or not =)

function bartik_process_html($variables){
    if(!drupal_is_taxonomy()){
    $variables['title']['class'][] = 'element invisible';
    }
    elseif(!drupal_is_front_page()){
    $variables['title']['class'][] = 'element invisible';
    }
    else{

    }
}
Try something like this:

&lt;?php
   function hook_preprocess_page(&amp;$variables) {
       if (drupal_is_front_page() || drupal_is_taxonomy()) {
           $variables['title'] = NULL;
       }
   }


Change hook to the name of your theme.  Based on your example, it looks like you're hacking core which isn't good. Create a subtheme and implement your custom themeing there.