Index: branches/5.3.x/core/admin_templates/js/grid_filters.js
===================================================================
diff -u -N -r15483 -r15902
--- branches/5.3.x/core/admin_templates/js/grid_filters.js	(.../grid_filters.js)	(revision 15483)
+++ branches/5.3.x/core/admin_templates/js/grid_filters.js	(.../grid_filters.js)	(revision 15902)
@@ -88,7 +88,7 @@
 			MultiOptions.SelectAll($cur_index);
 		}
 	)
-	.attr('checked', $options.length == $options.filter(':selected').length ? 'checked' : '');
+	.prop('checked', $options.length == $options.filter(':selected').length > 0);
 
 	$('input._mutlioptions_cb_' + $cur_index).click(
 		function ($e) {
@@ -137,15 +137,15 @@
 	var $select_all = $('#_mutlioptions_cb_' + selector_index + '_all');
 	var $options = $("input[type='checkbox']", '#' + jq(MultiOptions.Selectors[selector_index]) + '_div').not($select_all);
 
-	$select_all.attr('checked', $options.length == $options.filter(':checked').length ? 'checked' : '');
+	$select_all.prop('checked', $options.length == $options.filter(':checked').length > 0);
 }
 
 MultiOptions.SelectAll = function(selector_index) {
 	// set all checkbox to match "Select All" checkbox
 	var $select_all = $('#_mutlioptions_cb_' + selector_index + '_all');
-	var $checked = $select_all.attr('checked');
+	var $checked = $select_all.prop('checked');
 
-	$("input[type='checkbox']", '#' + jq(MultiOptions.Selectors[selector_index]) + '_div').not($select_all).attr('checked', $checked);
+	$("input[type='checkbox']", '#' + jq(MultiOptions.Selectors[selector_index]) + '_div').not($select_all).prop('checked', $checked);
 
 	// sync hidden field
 	var $reg_exp = new RegExp('^_mutlioptions_cb_' + selector_index + '_(?!all)([0-9A-Za-z-]+)');