Close tabs containing a URL in Safari Applescript

closeLinkSafari.scpt

on run argv
  set passedInURL to (item 1 of argv)
  tell application "Safari"
  	set windowCount to number of windows
  	repeat with x from 1 to windowCount
  		set tabCount to number of tabs in window x
  		repeat with y from 1 to tabCount
  			set thistab to tab y of window x
  			set thisURL to URL of thistab
  			if passedInURL is in thisURL then close thistab
  		end repeat
  	end repeat
  end tell
end run