tagblock <table width=468 height=60> containing {
  (tag <img> AND tag <a href =~ /doubleclick.net/>)
  OR tag <a href =~ /flycast.com/>
  OR tag <!--/Begin Ad/-->
}

regex /doubleclick.net/ inside {
  attrib </img|script|i?frame|i?layer/ src>
  OR attrib <a href>
} inside tag <a|img|script|i?frame|i?layer>