weird id behaviour

gistfile1.diff

diff --git a/js/jquery.mobile.js b/js/jquery.mobile.js
index 86f8472..c9c7e3c 100644
--- a/js/jquery.mobile.js
+++ b/js/jquery.mobile.js
@@ -478,7 +478,7 @@
                                        }
 
                                        to
-                                               .attr( "id", fileUrl )
+                                               .attr( "id", fileUrl.replace(".", "") )
                                                .appendTo( $pageContainer );
                                                
                                        enhancePage();