How can i set the defalut value for phone field?

I tried following options

1) 000-000-0000

2) (000)-000-0000

but i am getting the error.

Error: Formula result is data type (Number), incompatible with expected data type (Phone)

How can i set the defalut value for phone field?

I tried following options

1) 000-000-0000

2) (000)-000-0000

but i am getting the error.

Error: Formula result is data type (Number), incompatible with expected data type (Phone)

Hi All,

Can any body tell me how can we hide & show block of section without using span or div tag in visualForce.

Thanks in advance.

Regards,

Sandy