diff --git a/modules/announcement/show.html.erb b/modules/announcement/show.html.erb
index 95fcd4a..1273043 100644
--- a/modules/announcement/show.html.erb
+++ b/modules/announcement/show.html.erb
@@ -252,7 +252,7 @@
       var carousel_images_slide = $('.carousel_images_slide');
       var carousel_images_slide_first_child = carousel_images_slide.find(">li").eq(active_slide);
       if(carousel_images_slide_first_child.length > 0){
-        var content_size = Math.floor((carousel_images_slide.width() - Number.parseInt(carousel_images_slide.css('font-size')) * 3) / carousel_images_slide_first_child.width());
+        var content_size = Math.floor((carousel_images_slide.outerWidth() - Number.parseInt(carousel_images_slide.css('font-size')) * 3) / carousel_images_slide_first_child.outerWidth(true));
         content_size = Math.max(content_size,1);
         if(carousel_images_slide.find(">li").length > content_size && active_slide > 0){
           active_slide -= content_size;
@@ -267,7 +267,7 @@
       var carousel_images_slide = $('.carousel_images_slide');
       var carousel_images_slide_first_child = carousel_images_slide.find(">li").eq(active_slide);
       if(carousel_images_slide_first_child.length > 0){
-        var content_size = Math.floor((carousel_images_slide.width() - Number.parseInt(carousel_images_slide.css('font-size')) * 3) / carousel_images_slide_first_child.width());
+        var content_size = Math.floor((carousel_images_slide.outerWidth() - Number.parseInt(carousel_images_slide.css('font-size')) * 3) / carousel_images_slide_first_child.outerWidth(true));
         content_size = Math.max(content_size,1);
         var li_length = carousel_images_slide.find(">li").length;
         if(li_length > content_size){
@@ -315,7 +315,7 @@
       var carousel_images_slide = $('.carousel_images_slide');
       var carousel_images_slide_first_child = carousel_images_slide.find(">li").eq(active_slide);
       if(carousel_images_slide_first_child.length > 0){
-        var content_size = Math.floor((carousel_images_slide.width() - Number.parseInt(carousel_images_slide.css('font-size')) * 3) / carousel_images_slide_first_child.width());
+        var content_size = Math.floor((carousel_images_slide.outerWidth() - Number.parseInt(carousel_images_slide.css('font-size')) * 3) / carousel_images_slide_first_child.outerWidth(true));
         content_size = Math.max(content_size,1);
         carousel_images_slide.find(">li").css("display","none");
         var active_count = carousel_images_slide.find(">li").length - active_slide;