diff --git a/libraries/DisplayResults.php b/libraries/DisplayResults.php
index de5b495eb3..6327224d24 100644
--- a/libraries/DisplayResults.php
+++ b/libraries/DisplayResults.php
@@ -4834,23 +4834,23 @@ class DisplayResults
             . '<i style="margin-left: 2em">' . __('With selected:') . '</i>' . "\n";
 
         $links_html .= Util::getButtonOrImage(
-            'submit_mult', 'mult_submit', 'submit_mult_change',
+            'submit_mult', 'mult_submit',
             __('Edit'), 'b_edit.png', 'edit'
         );
 
         $links_html .= Util::getButtonOrImage(
-            'submit_mult', 'mult_submit', 'submit_mult_copy',
+            'submit_mult', 'mult_submit',
             __('Copy'), 'b_insrow.png', 'copy'
         );
 
         $links_html .= Util::getButtonOrImage(
-            'submit_mult', 'mult_submit', 'submit_mult_delete',
+            'submit_mult', 'mult_submit',
             $delete_text, 'b_drop.png', 'delete'
         );
 
         if ($analyzed_sql_results['querytype'] == 'SELECT') {
             $links_html .= Util::getButtonOrImage(
-                'submit_mult', 'mult_submit', 'submit_mult_export',
+                'submit_mult', 'mult_submit',
                 __('Export'), 'b_tblexport.png', 'export'
             );
         }
diff --git a/libraries/Scripts.php b/libraries/Scripts.php
index 8457ed787f..a1a700a60d 100644
--- a/libraries/Scripts.php
+++ b/libraries/Scripts.php
@@ -68,17 +68,6 @@ class Scripts
                 continue;
             }
             $include = true;
-            if ($value['conditional_ie'] !== false
-                && PMA_USR_BROWSER_AGENT === 'IE'
-            ) {
-                if ($value['conditional_ie'] === true) {
-                    $include = true;
-                } else if ($value['conditional_ie'] == PMA_USR_BROWSER_VER) {
-                    $include = true;
-                } else {
-                    $include = false;
-                }
-            }
             if ($include) {
                 $scripts[] = "scripts%5B%5D=" . $value['filename'];
             }
@@ -117,8 +106,6 @@ class Scripts
      * Adds a new file to the list of scripts
      *
      * @param string $filename       The name of the file to include
-     * @param bool   $conditional_ie Whether to wrap the script tag in
-     *                               conditional comments for IE
      * @param bool   $before_statics Whether this dynamic script should be
      *                               included before the static ones
      *
@@ -126,7 +113,6 @@ class Scripts
      */
     public function addFile(
         $filename,
-        $conditional_ie = false,
         $before_statics = false
     ) {
         $hash = md5($filename);
@@ -138,7 +124,6 @@ class Scripts
         $this->_files[$hash] = array(
             'has_onload' => $has_onload,
             'filename' => $filename,
-            'conditional_ie' => $conditional_ie,
             'before_statics' => $before_statics
         );
     }
@@ -147,15 +132,13 @@ class Scripts
      * Add new files to the list of scripts
      *
      * @param array $filelist       The array of file names
-     * @param bool  $conditional_ie Whether to wrap the script tag in
-     *                              conditional comments for IE
      *
      * @return void
      */
-    public function addFiles($filelist, $conditional_ie = false)
+    public function addFiles($filelist)
     {
         foreach ($filelist as $filename) {
-            $this->addFile($filename, $conditional_ie);
+            $this->addFile($filename);
         }
     }
 
@@ -226,13 +209,11 @@ class Scripts
             if (strpos($file['filename'], "?") !== false) {
                 continue;
             }
+            $retval[] = array(
+                'name' => $file['filename'],
+                'fire' => $file['has_onload']
+            );
 
-            if (! $file['conditional_ie'] || PMA_USR_BROWSER_AGENT == 'IE') {
-                $retval[] = array(
-                    'name' => $file['filename'],
-                    'fire' => $file['has_onload']
-                );
-            }
         }
         return $retval;
     }
diff --git a/libraries/Theme.php b/libraries/Theme.php
index 3671a0ec66..ada76715c7 100644
--- a/libraries/Theme.php
+++ b/libraries/Theme.php
@@ -429,20 +429,6 @@ class Theme
         return $retval;
     }
 
-    /**
-     * Remove filter for IE.
-     *
-     * @return string CSS code.
-     */
-    function getCssIEClearFilter()
-    {
-        return PMA_USR_BROWSER_AGENT == 'IE'
-            && PMA_USR_BROWSER_VER >= 6
-            && PMA_USR_BROWSER_VER <= 8
-            ? 'filter: none'
-            : '';
-    }
-
     /**
      * Gets currently configured font size.
      *
@@ -491,15 +477,6 @@ class Theme
         // Opera 11.10
         $result[] = 'background: -o-linear-gradient(top, #'
             . $start_color . ', #' . $end_color . ');';
-        // IE 6-8
-        if (PMA_USR_BROWSER_AGENT == 'IE'
-            && PMA_USR_BROWSER_VER >= 6
-            && PMA_USR_BROWSER_VER <= 8
-        ) {
-            $result[] = 'filter: '
-                . 'progid:DXImageTransform.Microsoft.gradient(startColorstr="#'
-                . $start_color . '", endColorstr="#' . $end_color . '");';
-        }
         return implode("\n", $result);
     }
 }
diff --git a/libraries/Util.php b/libraries/Util.php
index dfff9dd6fd..322d57d703 100644
--- a/libraries/Util.php
+++ b/libraries/Util.php
@@ -2374,7 +2374,6 @@ class Util
      *
      * @param string $button_name  name of button element
      * @param string $button_class class of button or image element
-     * @param string $image_name   name of image element
      * @param string $text         text to display
      * @param string $image        image to display
      * @param string $value        value
@@ -2384,36 +2383,21 @@ class Util
      * @access  public
      */
     public static function getButtonOrImage(
-        $button_name, $button_class, $image_name, $text, $image, $value = ''
+        $button_name, $button_class, $text, $image, $value = ''
     ) {
         if ($value == '') {
             $value = $text;
         }
-
         if ($GLOBALS['cfg']['ActionLinksMode'] == 'text') {
             return ' <input type="submit" name="' . $button_name . '"'
                 . ' value="' . htmlspecialchars($value) . '"'
                 . ' title="' . htmlspecialchars($text) . '" />' . "\n";
         }
-
-        /* Opera has trouble with <input type="image"> */
-        /* IE (before version 9) has trouble with <button> */
-        if (PMA_USR_BROWSER_AGENT == 'IE' && PMA_USR_BROWSER_VER < 9) {
-            return '<input type="image" name="' . $image_name
-                . '" class="' . $button_class
-                . '" value="' . htmlspecialchars($value)
-                . '" title="' . htmlspecialchars($text)
-                . '" src="' . $GLOBALS['pmaThemeImage'] . $image . '" />'
-                . ($GLOBALS['cfg']['ActionLinksMode'] == 'both'
-                    ? '&nbsp;' . htmlspecialchars($text)
-                    : '') . "\n";
-        } else {
-            return '<button class="' . $button_class . '" type="submit"'
-                . ' name="' . $button_name . '" value="' . htmlspecialchars($value)
-                . '" title="' . htmlspecialchars($text) . '">' . "\n"
-                . self::getIcon($image, $text)
-                . '</button>' . "\n";
-        }
+        return '<button class="' . $button_class . '" type="submit"'
+            . ' name="' . $button_name . '" value="' . htmlspecialchars($value)
+            . '" title="' . htmlspecialchars($text) . '">' . "\n"
+            . self::getIcon($image, $text)
+            . '</button>' . "\n";
     } // end function
 
     /**
@@ -4983,4 +4967,3 @@ class Util
         return $result;
     }
 }
-
diff --git a/libraries/central_columns.lib.php b/libraries/central_columns.lib.php
index 13de8d70e6..a0af804a20 100644
--- a/libraries/central_columns.lib.php
+++ b/libraries/central_columns.lib.php
@@ -1188,11 +1188,10 @@ function PMA_getCentralColumnsTableFooter($pmaThemeImage, $text_dir)
     );
     $html_output .= Util::getButtonOrImage(
         'edit_central_columns', 'mult_submit change_central_columns',
-        'submit_mult_change', __('Edit'), 'b_edit.png', 'edit central columns'
+        __('Edit'), 'b_edit.png', 'edit central columns'
     );
     $html_output .= Util::getButtonOrImage(
         'delete_central_columns', 'mult_submit',
-        'submit_mult_central_columns_remove',
         __('Delete'), 'b_drop.png',
         'remove_from_central_columns'
     );
diff --git a/libraries/controllers/server/ServerDatabasesController.php b/libraries/controllers/server/ServerDatabasesController.php
index a8e2a46f2c..8cb409be3f 100644
--- a/libraries/controllers/server/ServerDatabasesController.php
+++ b/libraries/controllers/server/ServerDatabasesController.php
@@ -383,7 +383,6 @@ class ServerDatabasesController extends Controller
         $html .= Util::getButtonOrImage(
             '',
             'mult_submit' . ' ajax',
-            'drop_selected_dbs',
             __('Drop'), 'b_deltbl.png'
         );
 
diff --git a/libraries/core.lib.php b/libraries/core.lib.php
index 018cbbfd43..2f7f8241f0 100644
--- a/libraries/core.lib.php
+++ b/libraries/core.lib.php
@@ -569,18 +569,6 @@ function PMA_noCacheHeader()
         'Cache-Control: no-store, no-cache, must-revalidate,'
         . '  pre-check=0, post-check=0, max-age=0'
     );
-    if (PMA_USR_BROWSER_AGENT == 'IE') {
-        /* On SSL IE sometimes fails with:
-         *
-         * Internet Explorer was not able to open this Internet site. The
-         * requested site is either unavailable or cannot be found. Please
-         * try again later.
-         *
-         * Adding Pragma: public fixes this.
-         */
-        header('Pragma: public');
-        return;
-    }
 
     header('Pragma: no-cache'); // HTTP/1.0
     // test case: exporting a database into a .gz file with Safari
diff --git a/libraries/display_change_password.lib.php b/libraries/display_change_password.lib.php
index d72009bc61..d06a8c10e6 100644
--- a/libraries/display_change_password.lib.php
+++ b/libraries/display_change_password.lib.php
@@ -23,11 +23,7 @@ function PMA_getHtmlForChangePassword($mode, $username, $hostname)
      * autocomplete feature of IE kills the "onchange" event handler and it
      * must be replaced by the "onpropertychange" one in this case
      */
-    $chg_evt_handler = (PMA_USR_BROWSER_AGENT == 'IE'
-        && PMA_USR_BROWSER_VER >= 5
-        && PMA_USR_BROWSER_VER < 7)
-                 ? 'onpropertychange'
-                 : 'onchange';
+    $chg_evt_handler = 'onchange';
 
     $is_privileges = basename($_SERVER['SCRIPT_NAME']) === 'server_privileges.php';
 
diff --git a/libraries/rte/rte_list.lib.php b/libraries/rte/rte_list.lib.php
index 615613a825..26ee39f26f 100644
--- a/libraries/rte/rte_list.lib.php
+++ b/libraries/rte/rte_list.lib.php
@@ -145,11 +145,11 @@ function PMA_RTE_getList($type, $items)
             $GLOBALS['pmaThemeImage'], $GLOBALS['text_dir'], 'rteListForm'
         );
         $retval .= PMA\libraries\Util::getButtonOrImage(
-            'submit_mult', 'mult_submit', 'submit_mult_export',
+            'submit_mult', 'mult_submit',
             __('Export'), 'b_export.png', 'export'
         );
         $retval .= PMA\libraries\Util::getButtonOrImage(
-            'submit_mult', 'mult_submit', 'submit_mult_drop',
+            'submit_mult', 'mult_submit',
             __('Drop'), 'b_drop.png', 'drop'
         );
         $retval .= '</div>';
diff --git a/libraries/server_privileges.lib.php b/libraries/server_privileges.lib.php
index 445b3dd5ff..fe9259c3e9 100644
--- a/libraries/server_privileges.lib.php
+++ b/libraries/server_privileges.lib.php
@@ -2509,7 +2509,7 @@ function PMA_getHtmlForSpecificDbPrivileges($db)
             $GLOBALS['pmaThemeImage'], $GLOBALS['text_dir'], "usersForm"
         );
         $html_output .= Util::getButtonOrImage(
-            'submit_mult', 'mult_submit', 'submit_mult_export',
+            'submit_mult', 'mult_submit',
             __('Export'), 'b_tblexport.png', 'export'
         );
 
@@ -2588,7 +2588,7 @@ function PMA_getHtmlForSpecificTablePrivileges($db, $table)
             $GLOBALS['pmaThemeImage'], $GLOBALS['text_dir'], "usersForm"
         );
         $html_output .= Util::getButtonOrImage(
-            'submit_mult', 'mult_submit', 'submit_mult_export',
+            'submit_mult', 'mult_submit',
             __('Export'), 'b_tblexport.png', 'export'
         );
 
@@ -3604,7 +3604,7 @@ function PMA_getUsersOverview($result, $db_rights, $pmaThemeImage, $text_dir)
         . Util::getWithSelected($pmaThemeImage, $text_dir, "usersForm") . "\n";
 
     $html_output .= Util::getButtonOrImage(
-        'submit_mult', 'mult_submit', 'submit_mult_export',
+        'submit_mult', 'mult_submit',
         __('Export'), 'b_tblexport.png', 'export'
     );
     $html_output .= '<input type="hidden" name="initial" '
diff --git a/libraries/tracking.lib.php b/libraries/tracking.lib.php
index 6fc9f4253b..42b6a06c23 100644
--- a/libraries/tracking.lib.php
+++ b/libraries/tracking.lib.php
@@ -359,7 +359,7 @@ function PMA_getHtmlForTableVersionDetails(
         "versionsForm"
     );
     $html .= PMA\libraries\Util::getButtonOrImage(
-        'submit_mult', 'mult_submit', 'submit_mult_delete_version',
+        'submit_mult', 'mult_submit',
         __('Delete version'), 'b_drop.png', 'delete_version'
     );
 
@@ -1492,7 +1492,7 @@ function PMA_displayUntrackedTables(
         "untrackedForm"
     );
     echo PMA\libraries\Util::getButtonOrImage(
-        'submit_mult', 'mult_submit', 'submit_mult_track',
+        'submit_mult', 'mult_submit',
         __('Track table'), 'eye.png', 'track'
     );
     ?>
@@ -1712,7 +1712,7 @@ function PMA_displayTrackedTables(
         "trackedForm"
     );
     echo PMA\libraries\Util::getButtonOrImage(
-        'submit_mult', 'mult_submit', 'submit_mult_delete_tracking',
+        'submit_mult', 'mult_submit',
         __('Delete tracking'), 'b_drop.png', 'delete_tracking'
     );
     ?>
diff --git a/phpmyadmin.css.php b/phpmyadmin.css.php
index 68faed8c2a..0bfec39c5b 100644
--- a/phpmyadmin.css.php
+++ b/phpmyadmin.css.php
@@ -14,21 +14,14 @@
 define('PMA_MINIMUM_COMMON', true);
 require_once 'libraries/common.inc.php';
 
-// MSIE 6 (at least some unpatched versions) has problems loading CSS
-// when zlib_compression is on
-if (PMA_USR_BROWSER_AGENT == 'IE' && PMA_USR_BROWSER_VER == '6'
-    && (ini_get('zlib.output_compression'))
-) {
-    @ini_set('zlib.output_compression', 'Off');
-} else {
-    $buffer = OutputBuffering::getInstance();
-    $buffer->start();
-    register_shutdown_function(
-        function () {
-            echo OutputBuffering::getInstance()->getContents();
-        }
-    );
-}
+
+$buffer = OutputBuffering::getInstance();
+$buffer->start();
+register_shutdown_function(
+    function () {
+        echo OutputBuffering::getInstance()->getContents();
+    }
+);
 
 // Send correct type:
 header('Content-Type: text/css; charset=UTF-8');
diff --git a/tbl_change.php b/tbl_change.php
index 2022abd487..a387e6a529 100644
--- a/tbl_change.php
+++ b/tbl_change.php
@@ -111,12 +111,7 @@ $_form_params = PMA_getFormParametersForInsertForm(
  */
 // autocomplete feature of IE kills the "onchange" event handler and it
 //        must be replaced by the "onpropertychange" one in this case
-$chg_evt_handler = (PMA_USR_BROWSER_AGENT == 'IE'
-    && PMA_USR_BROWSER_VER >= 5
-    && PMA_USR_BROWSER_VER < 7
-)
-     ? 'onpropertychange'
-     : 'onchange';
+$chg_evt_handler =  'onchange';
 // Had to put the URI because when hosted on an https server,
 // some browsers send wrongly this form to the http server.
 
diff --git a/templates/table/structure/check_all_table_column.phtml b/templates/table/structure/check_all_table_column.phtml
index 701ed20641..fbf52629e8 100644
--- a/templates/table/structure/check_all_table_column.phtml
+++ b/templates/table/structure/check_all_table_column.phtml
@@ -1,31 +1,31 @@
 <div class="print_ignore" >
     <?= PMA\libraries\Util::getWithSelected($pmaThemeImage, $text_dir, "fieldsForm") ?>
     <?= PMA\libraries\Util::getButtonOrImage(
-    'submit_mult', 'mult_submit', 'submit_mult_browse',
+    'submit_mult', 'mult_submit',
     __('Browse'), 'b_browse.png', 'browse'
     ) ?>
 
     <?php if (! $tbl_is_view && ! $db_is_system_schema): ?>
         <?= PMA\libraries\Util::getButtonOrImage(
         'submit_mult', 'mult_submit change_columns_anchor ajax',
-        'submit_mult_change', __('Change'), 'b_edit.png', 'change'
+        __('Change'), 'b_edit.png', 'change'
         ) ?>
         <?= PMA\libraries\Util::getButtonOrImage(
-        'submit_mult', 'mult_submit', 'submit_mult_drop',
+        'submit_mult', 'mult_submit',
         __('Drop'), 'b_drop.png', 'drop'
         ) ?>
 
         <?php if ('ARCHIVE' != $tbl_storage_engine): ?>
             <?= PMA\libraries\Util::getButtonOrImage(
-                'submit_mult', 'mult_submit', 'submit_mult_primary',
+                'submit_mult', 'mult_submit',
                 __('Primary'), 'b_primary.png', 'primary'
             ) ?>
             <?= PMA\libraries\Util::getButtonOrImage(
-                'submit_mult', 'mult_submit', 'submit_mult_unique',
+                'submit_mult', 'mult_submit',
                 __('Unique'), 'b_unique.png', 'unique'
             ) ?>
             <?= PMA\libraries\Util::getButtonOrImage(
-                'submit_mult', 'mult_submit', 'submit_mult_index',
+                'submit_mult', 'mult_submit',
                 __('Index'), 'b_index.png', 'index'
             ) ?>
 
@@ -34,19 +34,19 @@
                         || $tbl_storage_engine == 'ARIA'
                         || $tbl_storage_engine == 'MARIA')): ?>
                 <?= PMA\libraries\Util::getButtonOrImage(
-                    'submit_mult', 'mult_submit', 'submit_mult_fulltext',
+                    'submit_mult', 'mult_submit',
                     __('Fulltext'), 'b_ftext.png', 'ftext'
                 ) ?>
             <?php endif; ?>
 
             <?php if ($GLOBALS['cfgRelation']['centralcolumnswork']): ?>
                 <?= PMA\libraries\Util::getButtonOrImage(
-                    'submit_mult', 'mult_submit', 'submit_mult_central_columns_add',
+                    'submit_mult', 'mult_submit',
                     __('Add to central columns'), 'centralColumns_add.png',
                     'add_to_central_columns'
                 ) ?>
                 <?= PMA\libraries\Util::getButtonOrImage(
-                    'submit_mult', 'mult_submit', 'submit_mult_central_columns_remove',
+                    'submit_mult', 'mult_submit',
                     __('Remove from central columns'), 'centralColumns_delete.png',
                     'remove_from_central_columns'
                 ) ?>
diff --git a/test/classes/ScriptsTest.php b/test/classes/ScriptsTest.php
index db6be2ab5a..16da6b7b28 100644
--- a/test/classes/ScriptsTest.php
+++ b/test/classes/ScriptsTest.php
@@ -90,8 +90,7 @@ class ScriptsTest extends PMATestCase
                     array(
                         array(
                             'has_onload' => false,
-                            'filename' => 'common.js',
-                            'conditional_ie' => false
+                            'filename' => 'common.js'
                         )
                     )
                 )
@@ -187,7 +186,6 @@ $(function() {});
             $hash => array(
                 'has_onload' => 1,
                 'filename' => 'common.js',
-                'conditional_ie' => false,
                 'before_statics' => false
             )
         );
@@ -198,15 +196,6 @@ $(function() {});
             $this->object
         );
 
-        // Add same script file again w/
-        // conditional_ie true
-        $this->object->addFile($file, true);
-        // No change in _files as file was already added
-        $this->assertAttributeEquals(
-            $_files,
-            '_files',
-            $this->object
-        );
     }
 
     /**
@@ -225,17 +214,15 @@ $(function() {});
             'd7716810d825f4b55d18727c3ccb24e6' => array(
                 'has_onload' => 1,
                 'filename' => 'common.js',
-                'conditional_ie' => true,
                 'before_statics' => false
             ),
             '347a57484fcd6ea6d8a125e6e1d31f78' => array(
                 'has_onload' => 1,
                 'filename' => 'sql.js',
-                'conditional_ie' => true,
                 'before_statics' => false
             ),
         );
-        $this->object->addFiles($filenames, true);
+        $this->object->addFiles($filenames);
         $this->assertAttributeEquals(
             $_files,
             '_files',
diff --git a/test/classes/ThemeTest.php b/test/classes/ThemeTest.php
index 5c8a03fbbe..f84174d276 100644
--- a/test/classes/ThemeTest.php
+++ b/test/classes/ThemeTest.php
@@ -331,19 +331,6 @@ class ThemeTest extends PMATestCase
         );
     }
 
-    /**
-     * Test for getCssIEClearFilter
-     *
-     * @return void
-     */
-    public function testGetCssIEClearFilter()
-    {
-        $this->assertEquals(
-            $this->object->getCssIEClearFilter(),
-            ''
-        );
-    }
-
     /**
      * Test for getFontSize
      *
diff --git a/themes/pmahomme/css/common.css.php b/themes/pmahomme/css/common.css.php
index 32d24ae1fd..8d8faa4808 100644
--- a/themes/pmahomme/css/common.css.php
+++ b/themes/pmahomme/css/common.css.php
@@ -542,7 +542,6 @@ button.mult_submit {
 table tr.odd th,
 .odd {
     background: #fff;
-    <?php echo $_SESSION['PMA_Theme']->getCssIEClearFilter(); ?>
 }
 
 /* even items 2,4,6,8,... */
@@ -550,7 +549,6 @@ table tr.odd th,
 table tr.even th,
 .even {
     background: #DFDFDF;
-    <?php echo $_SESSION['PMA_Theme']->getCssIEClearFilter(); ?>
 }
 
 /* odd table rows 1,3,5,7,... */