preprocess-html hook to force IE out of compatibility mode

preprocess-html.inc

 
// Using Omega theme copy this to preprocess-html.inc

$data = array(
     '#tag' => 'meta',
     '#attributes' => array(
       'http-equiv' => "X-UA-Compatible",
       'content' => "IE=edge,chrome=1",
       )
     );

   drupal_add_html_head($data,'key');
  
// Otherwise use the following in template.php

function THEMENAME_preprocess_html(&$vars) {
 
  $data = array(
     '#tag' => 'meta',
     '#attributes' => array(
       'http-equiv' => "X-UA-Compatible",
       'content' => "IE=edge,chrome=1",
       )
     );

   drupal_add_html_head($data,'key');
  
}