diff --git a/web/skins/classic/views/montage.php b/web/skins/classic/views/montage.php
index 0009b9929..9bb394db2 100644
--- a/web/skins/classic/views/montage.php
+++ b/web/skins/classic/views/montage.php
@@ -176,19 +176,19 @@ if ( $showZones ) {
 
           <span id="widthControl">
             <label><?php echo translate('Width') ?></label>
-            <?php echo htmlSelect('width', $widths, $options['width'], 'changeSize(this);'); ?>
+            <?php echo htmlSelect('width', $widths, $options['width'], array('data-on-change-this'=>'changeSize')); ?>
           </span>
           <span id="heightControl">
             <label><?php echo translate('Height') ?></label>
-            <?php echo htmlSelect('height', $heights, $options['height'], 'changeSize(this);'); ?>
+            <?php echo htmlSelect('height', $heights, $options['height'], array('data-on-change-this'=>'changeSize')); ?>
           </span>
           <span id="scaleControl">
             <label><?php echo translate('Scale') ?></label>
-            <?php echo htmlSelect('scale', $scales, $scale, 'changeScale(this);'); ?>
+            <?php echo htmlSelect('scale', $scales, $scale, array('data-on-change-this'=>'changeScale')); ?>
           </span> 
           <span id="layoutControl">
             <label for="layout"><?php echo translate('Layout') ?></label>
-            <?php echo htmlSelect('zmMontageLayout', $layoutsById, $layout_id, array('onchange'=>'selectLayout(this);')); ?>
+            <?php echo htmlSelect('zmMontageLayout', $layoutsById, $layout_id, array('data-on-change-this'=>'selectLayout')); ?>
           </span>
           <input type="hidden" name="Positions"/>
           <button type="button" id="EditLayout" data-on-click-this="edit_layout"><?php echo translate('EditLayout') ?></button>