set warning_quit_or_continue to button returned of (display dialog theURLWarningTextLabel1 & return & return & URL_user_entered & return & return & theURLWarningTextLabel2 & return & return & simulate_warnings & return & return & theURLWarningTextLabel3 buttons {theWarningButtonsMainLabel, theButtonContinueLabel} default button 2 with title diag_Title with icon file MacYTDL_custom_icon_file giving up after 600)