title: How do I use an individual checkbox value from a wordpress meta box?
body: <p>I'm trying to use a metabox checkbox to hide/display on hover. The problem is it shows the div if any of the posts have the check box checked. I need it to toggle the div "on" &amp; "off" depending on if the checkbox is checked. Any help would be greatly appreciated.
  Here is the code in my functions.php:
      `// Checkbox Meta
      add_action("admin_init", "checkbox_init");</p>
  
  <pre><code>function checkbox_init(){
  add_meta_box("checkbox", "Check to Show Bubbles", "checkbox", "homefeature", "normal",    "high");
  }
  
  function checkbox(){
  global $post;
  $custom = get_post_custom($post-&gt;ID);
  $field_id = $custom["field_id"][0];
  
  echo '&lt;label&gt;Show Bubbles?&lt;/label&gt;';
  $field_id_value = get_post_meta($post-&gt;ID, 'field_id', true);
  if($field_id_value == "yes") {
  $field_id_checked = 'checked="checked"';
  }
  echo ' &lt;input type="checkbox" name="field_id" value="yes" '.$field_id_checked.' /&gt;';
  }
  
  // Save Meta Details
  add_action('save_post', 'save_details');
  
  function save_details(){
   global $post;
  
    if (defined('DOING_AUTOSAVE') &amp;&amp; DOING_AUTOSAVE) {
     return $post-&gt;ID;
  }
  
  update_post_meta($post-&gt;ID, "field_id", $_POST["field_id"]);
  }
  
  function custom_content($id) {
  $field_id = get_post_meta($id, 'field_id', true);
  
  if($field_id == yes) {
       echo '&lt;script type="text/javascript"&gt;';
           echo '$("this").mouseover(function() {';
       echo "$('#mainFeatureFlashBG').css({'display' : 'block'})";
       echo '}&lt;/script&gt;'; 
  }
  else{
     echo '&lt;script type="text/javascript"&gt;';
         echo '$("this").mouseover(function() {';
     echo "$('#mainFeatureFlashBG').css({'display' : 'none'})";
     echo '}&lt;/script&gt;';
  }
  }`
  </code></pre>
  
  <p>Here is my php:
      </p>
  
  <pre><code>        &lt;ul&gt;  
              &lt;!-- Begin Miller Beer Logo Query--&gt;                      
              &lt;?php
              $args=array(
                'beerlogo'=&gt;'miller',
                'post_type' =&gt; 'homefeature',
                'post_status' =&gt; 'publish',                
                'posts_per_page' =&gt; -1
              );
              $my_query = null; 
              $my_query = new WP_Query($args); 
              if( $my_query-&gt;have_posts() ) {
  
                while ($my_query-&gt;have_posts()) : $my_query-&gt;the_post(); ?&gt;
                   &lt;li class="image-rollover"&gt;&lt;a href="&lt;?php echo     esc_url(get_post_meta($post-&gt;ID, 'homefeature_custom_link', true));
              ?&gt;"&gt;&lt;?php the_post_thumbnail('full'); ?&gt;               
              &lt;?php
          //Is the Checkbox for Bubbles Checked?
          custom_content(get_the_ID());               
      ?&gt;             
  
               &lt;/a&gt;
              &lt;/li&gt; 
  
                  &lt;?php
                endwhile;
              } 
              wp_reset_query(); 
              ?&gt;
          &lt;/ul&gt;
  </code></pre>