Code:
dialog tablename {
  title "Dialog"
  size -1 -1 200 200
  option pixels
  link "www.mirc.com", 1, 57 51 80 17, disable
}

The problem is that link doesn't appear at all.
Actually, i don't know if this is a bug but since the /did -b tablename 1 command behaves with different way, i guess i had to mention that.

RG's place