Added filemtime as parameter for stylesheets

diff --git a/wcfsetup/install/files/lib/system/style/StyleHandler.class.php b/wcfsetup/install/files/lib/system/style/StyleHandler.class.php
index 7b829e91bbea251804590269a2eac614a1bf9a1d..8a0a5d36d559f50beaa4bf3d0e0d810e23d6f6af 100644 (file)
--- a/wcfsetup/install/files/lib/system/style/StyleHandler.class.php
+++ b/wcfsetup/install/files/lib/system/style/StyleHandler.class.php
@@ -138,6 +138,6 @@ class StyleHandler extends SingletonFactory {
                        }
                }
                
-               return '<link rel="stylesheet" type="text/css" href="'.WCF::getPath().$filename.'" />';
+               return '<link rel="stylesheet" type="text/css" href="'.WCF::getPath().$filename.'?m='.filemtime(WCF_DIR.$filename).'" />';
        }
 }