[jQuery] [validate] filled on Mac bug

[TUNGA]

Hello,

is there any one who has experience on mac (both safari and FF) this
bug. none of rules are working:

                rules: {
                        secondSentDocumentsTo: {
//                              required: "#aTextArea:filled"
                                required: function() { return 
$("#aTextArea").is(":filled") ?
true: false; },
                        }
                }
Thanks
Mesut TUNGA