今天在仿一个站时，对一个div用上了一个id作为选择器，id名为“header_ads”,但不知道怎么回事，测试时就是显示不出来。目录内所有的字符都搜遍了，没有发现异常，直到换了Chrome一看 显示了这么一堆东西：

#flashad, #flex_sponsored_links, #flexiad, #flipbookAd, #floatads, #floating-ad-spacer, #floating-ads, #floatingAd, #floatingAds, #floating_ad, #floating_ad_container, #floatyContent, #foot-ad-1, #foot-add, #footAds, #footad, #footer-ad, #footer-ad-728, #footer-ad-block, #footer-ad-box, #footer-ad-col, #footer-ad-large, #footer-ad-loader, #footer-ad-shadow, #footer-ad-unit, #footer-ad-wrapper, #footer-ads, #footer-adspace, #footer-adv, #footer-advert, #footer-advert-area, #footer-advertisement, #footer-adverts, #footer-adwrapper, #footer-affl, #footer-banner-ad, #footer-leaderboard-ad, #footer-sponsored, #footerAd, #footerAdBottom, #footerAdBox, #footerAdDiv, #footerAdd, #footerAds, #footerAdsPlacement, #footerAdvert, #footerAdvertisement, #footerAdverts, #footerGoogleAd, #footer_AdArea, #footer_ad_01, #footer_ad_block, #footer_ad_cloud, #footer_ad_container, #footer_ad_holder, #footer_ad_inventory, #footer_ad_modules, #footer_add, #footer_addvertise, #footer_adsense_ad, #footer_adspace, #footer_adv, #footer_advertising, #footer_leaderboard_ad, #footer_text_ad, #footerad, #footerad728, #footerads, #footeradsbox, #footeradvert, #form_bottomad, #forum_top_ad, #forumlist-ad, #four_ads, #fp_rh_ad, #fpad1, #fpad2, #fpv_companionad, #fr_ad_center, #frameAd, #frameTextAd2, #frame_admain, #free_ad, #frmRightnavAd, #frnAdSky, #frnBannerAd, #frnContentAd, #front-ad-cont, #front-page-advert, #frontPageAd, #front_ad728, #front_adtop_content, #front_advert, #front_mpu, #front_mpu_content, #frontlowerad, #ft-ad, #ft-ad-1, #ft-ad-container, #ft-ads, #ft_mpu, #full_banner_ad, #fullsizebanner_468x60, #fullstory-google-textad, #fusionad, #fw-advertisement, #fwAdBox, #g-adblock2, #gAds, #gBnrAd, #gBottomRightAd, #g_ad, #g_adsense, #ga_300x250, #gads300x250, #gads_middle, #galleries-tower-ad, #gallery-ad, #gallery-ad-m0, #gallery-advert, #gallery-page-ad-bigbox, #gallery-random-ad, #gallery-slideshow-interstitial-ad, #gallery_ad, #gallery_ads, #gallery_header_ad, #galleryad1, #game-info-ad, #gameAdMiddle, #gameAdTopMiddle, #gameSquareAd, #game_header_ad, #game_profile_ad_300_250, #gamead, #gameads, #gamepage_ad, #gameplay_ad, #games-mpu-container, #games_ad_container, #gasense, #gbl_topmost_ad, #genad, #geoAd, #gft-adChoicesCopy, #gglads, #gglads213A, #gglads213B, #ggogle_AD, #gl_ad_300, #glamads, #glinkswrapper, #global-banner-ad, #globalHeader_divAd, #globalLeftNavAd, #globalTopNavAd, #global_header_ad, #global_header_ad_area, #gm-ad-lrec, #gmi-ResourcePageAd, #gmi-ResourcePageLowerAd, #gnadww, #go-ads-double-2, #go-ads-double-3, #goad1, #goads, #gog_ad, #gooadtop, #google-ad, #google-ad-art, #google-ad-table-right, #google-ad-tower, #google-ads, #google-ads-bottom, #google-ads-bottom-container, #google-ads-container, #google-ads-header, #google-ads-left-side, #google-adsense, #google-adsense-for-content, #google-adsense-mpusize, #google-adv-728x90, #google-adwords, #google-afc, #google-top-ads, #google336x280, #google468x60, #googleAd, #googleAdArea, #googleAdBottom, #googleAdBox, #googleAdSenseAdRR, #googleAdTop, #googleAdView, #googleAdYarrp, #googleAd_words, #googleAds, #googleAdsFrame, #googleAdsSml, #googleAdsense, #googleAdsenseAdverts, #googleAdsenseBanner, #googleAdsenseBannerBlog, #googleAdwordsModule, #googleAfcContainer, #googleSearchAds, #googleShoppingAdsRight, #googleShoppingAdsTop, #googleSubAds, #googleTxtAD, #google_ad, #google_ad_EIRU_newsblock, #google_ad_container, #google_ad_inline, #google_ad_test, #google_ads, #google_ads_aCol, #google_ads_box, #google_ads_div_Blog_300, #google_ads_div_Front-160x600, #google_ads_div_Raw_Override, #google_ads_div_Second_160, #google_ads_div_header1, #google_ads_div_header2, #google_ads_div_video_wallpaper_ad_container, #google_ads_frame, #google_ads_frame1_anchor, #google_ads_frame2_anchor, #google_ads_frame3_anchor, #google_ads_frame4_anchor, #google_ads_frame5_anchor, #google_ads_frame6_anchor, #google_ads_frame_quad, #google_ads_frame_vert, #google_ads_test, #google_ads_top, #google_ads_wide, #google_adsense, #google_adsense_ad, #google_adsense_home_468x60_1, #google_textlinks, #googlead-leaderboard, #googlead-left, #googlead-post-mpu, #googlead-sidebar-middle, #googlead-sidebar-top, #googlead01, #googlead2, #googlead_outside, #googleadleft, #googleads, #googleads1, #googleads_h_injection, #googleads_mpu_injection, #googleadsense, #googleadsense300x250, #googleadsrc, #googleadstop, #googlebanner, #googleblock300, #googlesponsor, #googletextads, #googtxtad, #gpt-ad-1, #gpt-ad-halfpage, #gpt-ad-rectangle1, #gpt-ad-rectangle2, #gpt-ad-skyscraper, #gpt-ad-story_rectangle3, #gpt_ad_panorama_top, #gpt_ad_small_insider_1, #gpt_unit_videoAdSlot1_0, #gridAdSidebarRight, #grid_ad, #grouponAdContainer, #gsyadrectangleload, #gsyadrightload, #gsyadtop, #gsyadtopload, #gtAD, #gtopadvts, #gtv_tabSponsor, #gwt-debug-ad, #h-ads, #hAd, #h_ads0, #h_ads1, #half-page-ad, #halfPageAd, #halfe-page-ad-box, #hb-header-ad, #hd-ads, #hd-banner-ad, #hd_ad, #hd_ad_wp, #hdr-ad, #hdr-banner-ad, #hdrAdBanner, #hdrAds, #hdtv_ad_ss, #head-ad-1, #head-ads, #head-advertisement, #head-banner468, #head1ad, #headAd, #headAds, #headAdv, #headGoogleAffiliateLinkblock, #head_ad_area, #head_ads, #head_advert, #headad, #headadvert, #header-ad, #header-ad-background, #header-ad-block, #header-ad-bottom, #header-ad-container, #header-ad-holder, #header-ad-label, #header-ad-left, #header-ad-rectangle-container, #header-ad-right, #header-ad-wrap, #header-ad2, #header-ad2010, #header-adsense, #header-adspace, #header-adv, #header-advert, #header-advert-panel, #header-advertisement, #header-advertising, #header-adverts, #header-advrt, #header-banner-728-90, #header-banner-ad, #header-banner-spc, #header-block-ads, #header-google, #header-house-ad, #header-lb-ad, #header-leader-ad, #header-leader-ad-2, #header-top-ads-text, #headerAdBackground, #headerAdButton, #headerAdSpace, #headerAdUnit, #headerAdWrap, #headerAds, #headerAds4, #headerAdsWrapper, #headerAdv, #headerBannerAdNew, #headerNewAdsContainer, #headerNewAdsContainerB, #headerTopAd, #headerTopAdWide, #header_ad_167, #header_ad_728, #header_ad_728_90, #header_ad_banner, #header_ad_block, #header_ad_container, #header_ad_leaderboard, #header_ad_units, #header_ad_widget, #header_ad_wrap, #header_adbox, #header_adcode, #header_ads, #header_ads2, #header_ads_2, #header_ads_p, #header_adsense, #header_adv, #header_advert, #header_advertisement, #header_advertisement_top, #header_advertising, #header_adverts, #header_bottom_ad, #header_flag_ad, #header_leaderboard_ad_container, #header_publicidad, #header_right_ad, #header_sponsors, #header_top_ad, #headerad, #headeradbox, #headeradcontainer, #headerads, #headeradsbox, #headeradsense, #headeradspace, #headeradvert1div, #headeradvertholder, #headeradwrap, #headergooglead, #headerprimaryad, #headersponsors, #headingAd, #headline-sponsor, #headline_ad, #headlinesAdBlock, #hi5-ad-1, #hidadvnet, #hiddenadAC, #hide_ad_section_v2, #hideads, #hideads1, #hl-sponsored-links, #hl-sponsored-results, #hl-top-ad, #hldhdAds, #hly_ad_side_bar_tower_left, #hly_inner_page_google_ad, #hmt-widget-ad-unit-3, #holder-storyad, #holdunderad, #home-ad, #home-ad-block, #home-ad-slot, #home-adv-300x250, #home-advert-module, #home-advertise, #home-page-listing-ad, #home-rectangle-ad, #home-right-col-ad, #home-side-ad, #home-top-ads, #homeAd, #homeAdLeft, #homeAds, #homeArticlesAd, #homeBottomAdWrapperInner, #homeMPU, #homePageBotAd, #homeSideAd, #homeTopRightAd, #home_ad, #home_ads_top_hold, #home_ads_vert, #home_bottom_ad, #home_contentad, #home_feature_ad, #home_lower_center_right_ad, #home_mpu, #home_sec2_adverts, #home_sidebar_ad, #home_spensoredlinks, #home_top_right_ad, #homegoogletextad, #homeheaderad, #homepage-ad, #homepage-adbar, #homepage-footer-ad, #homepage-header-ad, #homepage-sidebar-ads, #homepageAd, #homepageAdsTop, #homepageFooterAd, #homepageGoogleAds, #homepage_ad, #homepage_right_ad, #homepage_right_ad_container, #homepage_top_ad, #homepage_top_ads, #homepagead_300x250, #homepageadvert, #homestream-advert3, #hometop_234x60ad, #hometopads, #horAd, #hor_ad, #horadslot, #horizad, #horizads728, #horizontal-ad, #horizontal-adspace, #horizontal-banner-ad, #horizontal-banner-ad-container, #horizontalAd, #horizontal_ad, #horizontal_ad2, #horizontal_ad_top, #horizontalad, #horizontalads, #hot-deals-ad, #hottopics-advert, #hours_ad, #houseAd, #hp-header-ad, #hp-mpu, #hp-right-ad, #hp-store-ad, #hpSponsor, #hpV2_300x250Ad, #hpV2_googAds, #hp_ad300x250, #hp_right_ad_300, #i_ads_table, #ibt_local_ad728, #icePage_SearchLinks_AdRightDiv, #icePage_SearchLinks_DownloadToolbarAdRightDiv, #icePage_SearchResults_ads0_SponsoredLink, #icePage_SearchResults_ads1_SponsoredLink, #icePage_SearchResults_ads2_SponsoredLink, #icePage_SearchResults_ads3_SponsoredLink, #icePage_SearchResults_ads4_SponsoredLink, #icom-ad-top, #idDivAd, #idMapAdvertising, #idRightAdArea, #idSponsoredresultend, #idSponsoredresultstart, #id_SearchAds, #ifmSocAd, #iframe-ad, #iframe-ad-container-Top3, #iframeAd_2, #iframeRightAd, #iframeTopAd, #iframe_ad_2, #iframe_ad_300, #iframe_ad_728, #iframe_container300x250, #iframead-300x250, #ignad_medrec, #ii_banner_ads, #imPopup, #im_box, #im_popupDiv, #im_popupFixed, #image_selector_ad, #imageadsbox, #imgCollContentAdIFrame, #imgad1, #imu_ad_module, #in-content-ad, #in-story-ad-wrapper, #in_ad_col_a, #in_post_ad_middle_1, #in_serp_ad, #inadspace, #inarticlead, #inc-ads-bigbox, #index-ad, #index-bottom-advert, #indexSquareAd, #indexad, #indiv_adsense, #influads_block, #infoBottomAd, #inline-ad, #inline-story-ad, #inline-story-ad2, #inlineAd, #inlineAdCont, #inlineAdtop, #inlineAdvertisement, #inlineBottomAd, #inline_ad, #inline_ad_section, #inline_search_ad, #inlinead, #inlineads, #inlinegoogleads, #inlist-ad-block, #inner-ad, #inner-advert-row, #inner-deals-ads, #inner-top-ads, #innerad, #innerpage-ad, #innovativeadspan, #inside-page-ad, #insideCubeAd, #insidearticleBodyAd, #insider_ad_wrapper, #instoryad, #instoryadtext, #instoryadwrap, #insurance-ad-1-container, #int-ad, #intAdUnit, #int_ad, #internalAdvert, #internalads, #interstitialAd, #interstitialAdContainer, #interstitialAdUnit, #interstitial_ad, #interstitial_ad_container, #interstitial_ad_wrapper, #interstitial_ads, #introAds, #invid_ad, #ip-ad-leaderboard, #ip-ad-skyscraper, #ipadv, #iqadcontainer, #iqadoverlay, #iqadtile1, #iqadtile11, #iqadtile2, #iqadtile3, #iqadtile4, #iqadtile5, #iqadtile8, #iqadtile9, #iqd_align_Ad, #iqd_mainAd, #iqd_rightAd, #iqd_topAd, #ir-sidebar-ad, #irgoogleadsense, #islandAd, #islandAdPan, #islandAdPane, #islandAdPane2, #islandAdPaneGoogle, #islandAdSponsored, #island_ad_top, #islandad, #isliveContainer, #item-detail-feature-ad, #itemGroupAd2, #iwad, #j_ad, #j_special_ad, #ji_medShowAdBox, #jmp-ad-buttons, #jobsAdBox, #joead, #joead2, #js-ad-leaderboard, #js_adsense, #jt-advert, #jupiter-ads, #ka_adFullBanner, #ka_adMediumRectangle, #ka_adsense_container, #ka_samplead, #kamidarticle-adnotice, #kamidarticle-middle-content, #karmaAds, #kaufDA-widget, #kdz_ad1, #kdz_ad2, #keen_overlay_ad_display, #keyadvertcontainer, #khAdSpace, #l_home-keen_ad_mask, #landing-adserve, #landing-adserver, #lapho-top-ad-1, #large-ads, #large-rectange-ad, #large-rectange-ad-2, #large_rec_ad1, #largead, #lateAd, #lateralAdWrapper, #launchpad-ads-2, #layerAds_layerDiv, #layerTLDADSERV, #layer_ad, #layer_ad_content, #layer_ad_main, #layer_adv1, #layerad, #layeradsense, #lb-ad, #lb-sponsor-left, #lb-sponsor-right, #lbAdBar, #lbAdBarBtm, #lblAds, #lead-ads, #lead_ad, #leadad_1, #leader-ad, #leader-board-ad, #leaderAdContainer, #leaderAdContainerOuter, #leader_ad, #leader_board_ad, #leaderad, #leaderad_section, #leaderadvert, #leaderboard-ad-container, #leaderboard-bottom-ad, #leaderboardAd, #leaderboardAdArea, #leaderboardAdArea2, #leaderboardAdLabel, #leaderboardAdSibling, #leaderboardAdTop, #leaderboardAds, #leaderboardAdvert, #leaderboardAdvertFooter, #leaderboardBottomAd, #leaderboard_728x90, #leaderboard_Ad, #leaderboard_ad, #leaderboard_ad_gam, #leaderboard_ad_main, #leaderboard_ad_unit, #leaderboard_bottom_ad, #leaderboard_top_ad, #leatherboardad, #left-ad-1, #left-ad-2, #left-ad-col, #left-ad-skin, #left-bottom-ad, #left-col-ads-1, #left-lower-adverts, #left-lower-adverts-container, #leftAdAboveSideBar, #leftAdCol, #leftAdContainer, #leftAdMessage, #leftAdSpace, #leftAd_fmt, #leftAd_rdr, #leftAds, #leftAdsSmall, #leftAdvert, #leftColumnAdContainer, #leftGoogleAds, #leftSectionAd300-100, #leftTopAdWrapper, #left_ad, #left_adspace, #left_adv, #left_advertisement, #left_bg_ad, #left_block_ads, #left_float_ad, #left_side_ads, #left_sidebar_ads, #left_skyscraper_ad, #left_ws_ad_container, #leftcolAd, #leftcolumnad, #leftframeAD, #lg-banner-ad, #lgfRightBarAd, #lhsBottomAd, #li-right-geobooster-oas, #ligatus, #ligatusdiv, #linebreak-ads, #linkAdSingle, #linkAds, #link_ads, #linkads, #links-ads-detailnews, #listadholder, #liste_top_ads_wrapper, #listing-ad, #live-ad, #lj_ad_row, #load-adslargerect, #localAds, #logoAd2, #long-ad, #long-ad-box, #long-ad-space, #long-bottom-ad-wrapper, #longAdSpace, #longAdWrap, #long_advert_header, #long_advertisement, #lower-advertising, #lowerAdvertisement, #lowerAdvertisementImg, #lower_ad, #lowerads, #lowerthirdad, #lowertop-adverts, #lowertop-adverts-container, #lpAdPanel, #lrec_ad, #lrecad, #lsadvert-left_menu_1, #lsadvert-left_menu_2, #lsadvert-top, #mBannerAd, #m_top_adblock, #madison_ad_248_100, #madskills-ad-manager-0, #madskills-ad-manager-1, #madskills-ad-manager-2, #madskills-ad-manager-3, #magnify_player_continuous_ad, #main-ad, #main-ad160x600, #main-ad160x600-img, #main-ad728x90, #main-advert, #main-advert1, #main-advert2, #main-advert3, #main-bottom-ad, #main-bottom-ad-tray, #main-content-adcontent1, #main-header-ad-wrap, #main-header-ad-wrap-home, #main-right-ad-tray, #main-tj-ad, #mainAd1, #mainAdUnit, #mainAdvert, #mainAdvertismentP, #mainHeaderAdvertisment, #mainMenu_divTopAd, #mainPageAds, #mainPlaceHolder_coreContentPlaceHolder_rightColumnAdvert_divControl, #main_AD, #main_ads, #main_rec_ad, #main_top_ad, #main_top_ad_container, #major_ad, #maker-rect-ad, #mapAdvert, #marcoad, #marketing-promo, #marketplaceAds, #marquee_ad, #masSearchAd, #mastAd, #mastAdvert, #mast_ad_wrap, #mast_ad_wrap_btm, #mastad, #masterTopAds, #mastercardAd, #masthead-ad, #masthead_ad, #masthead_topad, #matchFooterAd, #mc_ad, #md-sidebar-video-companion-ad-loaded, #md_adLoader, #md_topad, #me-adspace-002, #med-rect-ad, #medRecAd, #medReqAd, #media-ad, #media-ad-thumbs, #mediaAdLeaderboard, #media_ad, #mediaget_box, #mediagoogleadsense, #mediaplayer_adburner, #medium-ad, #medium-rectangle-ad1, #mediumAdContainer, #mediumAdvertisement, #mediumRectangleAd, #mediumrectangle_300x250, #medrec_bottom_ad, #medrec_middle_ad, #medrec_top_ad, #medrectad, #medrectangle_banner, #memberad, #mens-journal-feature-ad, #menu-ads, #menuAds, #menuad, #menubanner-ad-content, #mgid-container, #mhheader_ad, #mi_story_assets_ad, #microAdDiv, #microsoft_ad, #mid-ad300x250, #mid-table-ad, #midAD, #midRightAds, #midRightTextAds, #mid_ad_div, #mid_ad_title, #mid_left_ads, #mid_mpu, #mid_roll_ad_holder, #midadd, #midadspace, #midadvert, #midbarad, #midbnrad, #midcolumn_ad, #middle-ad, #middle-story-ad-container, #middleRightColumnAdvert, #middle_ad, #middle_ads, #middle_bannerad, #middle_bannerad_section, #middle_body_advertising, #middle_mpu, #middle_sponsor_ads, #middlead, #middleads, #middleads2, #midpost_ad, #midrect_ad, #midstrip_ad, #mini-ad, #mini-panel-dart_stamp_ads, #mini-panel-dfp_stamp_ads, #miniAdsAd, #mini_ads_inset, #mn_ads, #moa-ads-long, #mobile_ad_spot_header, #mochila-column-right-ad-300x250, #mochila-column-right-ad-300x250-1, #mod-partner-center, #mod_ad, #mod_ad_top, #modal-ad, #modal_videoAd_wrapper, #module-ad-300x250, #module-ad-728x90, #module-google_ads, #module_ad, #module_box_ad, #module_sky_scraper, #monsterAd, #moogleAd, #more_ad, #moreads, #mos-adCarouselContainer, #mosBannerAd, #mosTileAds, #most_popular_ad, #motionAd, #movads10, #movieads, #mozo-ad, #mph-rightad, #mpu-ad, #mpu-advert, #mpu-cont, #mpu-content, #mpu300250, #mpuAd, #mpuAdvert, #mpuContainer, #mpuDiv, #mpuInContent, #mpuSecondary, #mpuSlot, #mpuWrapper, #mpuWrapper600, #mpuWrapperAd, #mpuWrapperAd2, #mpu_300x250, #mpu_ad, #mpu_ad2, #mpu_adv, #mpu_banner, #mpu_box, #mpu_firstpost, #mpu_holder, #mpu_text_ad, #mpuad, #mpubox, #mpuholder, #mpuholder01, #mpusLeftAd, #mr_banner_topad, #mrec-advertisement, #mrecAdContainer, #mrecPlacement, #msAds, #ms_ad, #msnAds_inner, #msn_header_ad, #msnau_ad_medium_rectangle, #mtSponsor, #mu_2_ad, #multiLinkAdContainer, #multi_ad, #multibar-ads, #mvp_160_ad, #my-ads, #my-adsFPAD, #my-adsFPL, #my-adsFPT, #my-adsLREC, #my-medium-rectangle-ad-1-container
{
display:none;
orphans: 4321;
}

一时反应不过来，我根本没有这些CSS，哪来的？！ 突然意识到应该是ADblock屏蔽了。原来这东西是这么干活的，扫描网页中div的选择器，如果包含以上敏感id就会 display:none 掉。换一个id，果然显示出来了。以后设计这东西也要谨慎了。