var str='%3Cscript%20data-jc%3D%2277%22%20data-jc-version%3D%22r20211207%22%3E%28function%28%29%7B%2F%2A%20%20Copyright%20The%20Closure%20Library%20Authors.%20SPDX-License-Identifier%3A%20Apache-2.0%20%2A%2F%20var%20h%3Dthis%7C%7Cself%3B%2F%2A%20%20SPDX-License-Identifier%3A%20Apache-2.0%20%2A%2F%20function%20k%28b%29%7Bk%5B%22%20%22%5D%28b%29%3Breturn%20b%7Dk%5B%22%20%22%5D%3Dfunction%28%29%7B%7D%3Bvar%20m%3DRegExp%28%22%5Ehttps%3F%3A%2F%2F%28%5C%5Cw%7C-%29%2B%5C%5C.cdn%5C%5C.ampproject%5C%5C.%28net%7Corg%29%28%5C%5C%3F%7C%2F%7C%24%29%22%29%3B%20function%20n%28%29%7Bvar%20b%3Dh%3Bvar%20c%3D%5B%5D%3Bvar%20e%3Dnull%3Bdo%7Bvar%20a%3Db%3Btry%7Bvar%20d%3Bif%28d%3D%21%21a%26%26null%21%3Da.location.href%29b%3A%7Btry%7Bk%28a.foo%29%3Bd%3D%210%3Bbreak%20b%7Dcatch%28l%29%7B%7Dd%3D%211%7Dvar%20g%3Dd%7Dcatch%28l%29%7Bg%3D%211%7Dif%28g%29%7Bvar%20f%3Da.location.href%3Be%3Da.document%26%26a.document.referrer%7C%7Cnull%7Delse%20f%3De%2Ce%3Dnull%3Bc.push%28new%20p%28f%7C%7C%22%22%29%29%3Btry%7Bb%3Da.parent%7Dcatch%28l%29%7Bb%3Dnull%7D%7Dwhile%28b%26%26a%21%3Db%29%3Ba%3D0%3Bfor%28b%3Dc.length-1%3Ba%3C%3Db%3B%2B%2Ba%29c%5Ba%5D.depth%3Db-a%3Ba%3Dh%3Bif%28a.location%26%26a.location.ancestorOrigins%26%26a.location.ancestorOrigins.length%3D%3Dc.length-1%29for%28b%3D1%3Bb%3Cc.length%3B%2B%2Bb%29f%3Dc%5Bb%5D%2Cf.url%7C%7C%28f.url%3Da.location.ancestorOrigins%5Bb-%201%5D%7C%7C%22%22%2Cf.h%3D%210%29%3Ba%3Dnew%20p%28h.location.href%2C%211%29%3Bf%3Dnull%3Bfor%28e%3Db%3Dc.length-1%3B0%3C%3De%3B--e%29if%28g%3Dc%5Be%5D%2C%21f%26%26m.test%28g.url%29%26%26%28f%3Dg%29%2Cg.url%26%26%21g.h%29%7Ba%3Dg%3Bbreak%7Df%3Dnull%3Be%3Dc.length%26%26c%5Bb%5D.url%3B0%21%3Da.depth%26%26e%26%26%28f%3Dc%5Bb%5D%29%3Bc%3Dnew%20q%28a%2Cf%29%3Breturn%20c.g%3Fc.g.url%3Ac.i.url%7Dfunction%20q%28b%2Cc%29%7Bthis.i%3Db%3Bthis.g%3Dc%7Dfunction%20p%28b%2Cc%29%7Bthis.url%3Db%3Bthis.h%3D%21%21c%3Bthis.depth%3Dnull%7D%3Bfunction%20r%28%29%7Bvar%20b%3Dn%28%29%2Cc%3Db.indexOf%28%22%3F%22%29%3BsetTimeout%28function%28%29%7Bvar%20e%3Dvoid%200%3D%3D%3De%3F.01%3Ae%3Bif%28%21%28Math.random%28%29%3Ee%29%29%7Bvar%20a%3Ddocument.currentScript%3Ba%3D%28a%3Dvoid%200%3D%3D%3Da%3Fnull%3Aa%29%26%26%2277%22%3D%3D%3Da.getAttribute%28%22data-jc%22%29%3Fa%3Adocument.querySelector%28%27%5Bdata-jc%3D%2277%22%5D%27%29%3Be%3D%22https%3A%2F%2Fpagead2.googlesyndication.com%2Fpagead%2Fgen_204%3Fid%3Djca%26jc%3D77%26version%3D%22%2B%28a%26%26a.getAttribute%28%22data-jc-version%22%29%7C%7C%22unknown%22%29%2B%22%26sample%3D%22%2Be%3Ba%3Dwindow%3Bvar%20d%3Bif%28d%3Da.navigator%29d%3Da.navigator.userAgent%2Cd%3D%2FChrome%2F.test%28d%29%26%26%21%2FEdge%2F.test%28d%29%3F%210%3A%211%3Bd%26%26a.navigator.sendBeacon%3F%20a.navigator.sendBeacon%28e%29%3A%28a.google_image_requests%7C%7C%28a.google_image_requests%3D%5B%5D%29%2Cd%3Da.document%2Cd%3Dvoid%200%3D%3D%3Dd%3Fdocument%3Ad%2Cd%3Dd.createElement%28%22img%22%29%2Cd.src%3De%2Ca.google_image_requests.push%28d%29%29%7D%7D%2C0%29%3Breturn%200%3C%3Dc%3Fb.substring%280%2Cc%29%3Ab%7Dwindow.rfl%3Dfunction%28%29%7Breturn%20encodeURIComponent%28r%28%29%29%7D%3B%7D%29.call%28this%29%3B%3C%2Fscript%3E%3Ciframe%20id%3D%22google_decrypt_frame_396924045%22title%3D%22Advertisement%22scrolling%3D%22no%22frameborder%3D%220%22marginwidth%3D%220%22marginheight%3D%220%22width%3D%22300%22height%3D%22250%22src%3D%22about%3Ablank%22%3E%3C%2Fiframe%3E%3Cscript%3Edocument.getElementById%28%27google_decrypt_frame_396924045%27%29.src%20%3D%20%22https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fpagead%2Fadfetch%3Fadk%3D1463479949%26adsafe%3Dmedium%26client%3Dca-pub-6362111942204036%26format%3D300x250_as%26ip%3D70.132.33.87%26output%3Dhtml%26unviewed_position_start%3D1%26url%3Dhttps%3A%2F%2Fwww.britannica.com%2Ftechnology%2Fsocial-network%26sub_client%3Dbidder-600119%26u_h%3D800%26u_w%3D1024%26aceid%3DMMUatACX5NMA-VU0AbJuNAHlbjQBHnA0AVJwNAG8cDQB3XA0AQNxNAE0cTQBVHE0AWZxNAFwcTQBeHE0AYdxNAGPcTQBtXE0AdFxNAHScTQB1nE0AdxxNAHgcTQBS3NBAVNzQQHGGlwCuR1cAjjIXALc-YgCPPqIAidCqgKEQ6oCO1qqAn5iqgL9eKoC4nuqAoKFqgKAm6oCgZuqAoKbqgLkpKoCpqeqAqKoqgIqrKoCY6yqAh2uqgLhrqoClq-qAnawqgJ6sKoCgLCqAoOwqgKJsKoCtrSqAly2qgJUt6oCeb-qAtXMqgJv0aoCcNKqAobWqgKE2KoCj9iqAr7ZqgIj2qoC39qqAgDbqgJN3KoC5d2qAijeqgJV3qoCquCqAjvhqgJp4qoCY-OqAq3kqgIG5aoCMuWqAqDlqgLL5aoC4uaqAs7oqgLR6KoC3OiqAgvpqgJK6aoCuOmqAu_pqgL66aoCP-uqAofrqgK666oCyuuqAt3rqgKV7KoCsOyqAvzsqgIB7aoCYO2qAqbuqgK876oCv--qAq-zxQUvrvoPj6E1EWqj-xIKqPsS2b_7EjnG-xIUyPsSutz7Eu_c-xLw6PsSXOn7EuXp-xJm7fsSz-37Et_t-xKu7_sS5u_7Ehzw-xLv8PsSlWZkE-lb0BPEXNATMtVyFFuf6hT4Vmsaysu1Lg%26awbid_c%3DAKAmf-B0bvLqHMj1arjUsoPEaEg5N9CUo69gCobmH7pio07yoDQ76ivij9CyqaTpBAzwBvH38S7HKYTb-56yQ2HcqDTiIu_lXQcvhF1FFUr89FwuCozJgz2dMhkg9mBwAgBDYe-RAijEilGtABx65TvqdNAYtQbjLpgy5Jxx1dY7VeKkH856dcU%26awbid_d%3DAKAmf-CilGTwoe6pD0EV780s4HnPq01_Vb-O-GiuJ9PsnhzIgSF-n9ViE1ipT2_sfja4GSe7GOr2CKt-bMmrWqxr3BLGvqveMadl-Mszbb-5dTyWs4NseBBdDQj3Seb4FD4EsT0cLvvFE8YzORS0cpgrrhSIGmkcv9QWZF7olyUvfyaJKcDFREtL3mGWngf06kih62X3p0dYTWjnQCS7A4Y0PrRkuXu84zc4Jo47oCjZMGXMds_Rwo4IPKkt4xunCGlsKg3JpkGf7q_Q9YUi1RUh-HJqr87jk747AyolRyj0ZJVvxmDpNQmlidUEe53546-yT1z9ughbeId5jEIIxAOa0ZCRT9ObfLQkcu2j8QiiE2unFxugST7UvsCv4KKLGOVoCjLSGxSZHC-g37u33DwWCmVzJWP-gjN2lmpeuhg1zuNtPsPthomLC5nCWjvyAwZSWglHK6lNsrM-qoFTe4uAQ7I1uAajpiNFZgFJygdUTS0hAOS2PLbAPoqBNh5S7fHvKoJuJKCM1IvRjaC95sGygIIos8c66PUpiPrv4DKRA6JUWFYSHvbV5bma6odIMNLmBupLahl-LFcf8dPIEoUxZuKZBeHZc-3ux4mtMwJ2gSd-hfxc0lAf8veSoBhnZijMrUgLnXpOaqMFZ5NsJ6aESKQelhwrjhVruqlszhiArL83VJVyVYuL1noIvENACsZHVlRbz_Cv7keBOtLa3t2DjN97PSGuB-ZjuGtG-DuVOfbn-cwi52Nj9qsyT7AbgDtinb1fGZLD7WqRcQEla43eimIXMXgqVOGqoEngkh8YlFniQBQM4tk%26cid%3DCAASEuRomTBebsUMUJfFJHL_xSAJeQ%26a_cid%3DAKAmf-DBKpzvbelHyy2qtefK_y8nZ9p8QXcrWc-HXmApJcyGP7BkZbupVCroDkQ4CmeEUAMyDuuTwoCkMj6QEek1njSuLJ7aqQ%26exk%3D396924045%26rfl%3D%22%2B%28typeof%28window.rfl%29%3D%3D%27function%27%3Frfl%28%29%3A%27%27%29%2B%22%26a_pr%3D6%3A0.263873%22%3C%2Fscript%3E%3Cdiv%20style%3D%22position%3A%20absolute%3B%20left%3A%200px%3B%20top%3A%200px%3B%20visibility%3A%20hidden%3B%22%3E%3Cimg%20src%3D%22https%3A%2F%2Fpagead2.googlesyndication.com%2Fpagead%2Fgen_204%3Fid%3Dawbid%26awbid_b%3DAKAmf-DScK6YmxbnH0NjrdOqNzaZQbFeZ0Dg5gB7hehIXqFTVkcfo-XP4AveY82x2JSMm0okpRFXGoI8ZBL4x9318BfdnTQCWg%26pr%3D6%3A0.263873%22%20border%3D0%20width%3D1%20height%3D1%20alt%3D%22%22%20style%3D%22display%3Anone%22%3E%3C%2Fdiv%3E%3Cdiv%20style%3D%22position%3A%20absolute%3B%20left%3A%200px%3B%20top%3A%200px%3B%20visibility%3A%20hidden%3B%22%3E%3Cimg%20src%3D%22https%3A%2F%2Fbid.g.doubleclick.net%2Fxbbe%2Fpixel%3Fd%3DKAFCYkFLQW1mLURCS3B6dmJlbEh5eTJxdGVmS195OG5aOXA4UVhjcldjLUhYbUFwSmN5R1A3QmtaYnVwVkNyb0RrUTRDbWVFVUFNeUR1dVR3b0NrTWo2UUVlazFualN1TEo3YXFR%26v%3DAPEucNUmf_vHNLuGLQ1XvnKM53KvSXgxGZAb8ujFkRKXw_pMwSARUqhgtt6DRw_V19uB9MFvAd2w%22%20border%3D0%20width%3D1%20height%3D1%20alt%3D%22%22%20style%3D%22display%3Anone%22%3E%3C%2Fdiv%3E%3Cscript%20src%3D%22https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fpagead%2Fxbfe_backfill.js%22%3E%3C%2Fscript%3E%3Cscript%3E%28function%28%29%20%7Br3px%28%27396924045%27%29%3B%7D%29%28%29%3B%3C%2Fscript%3E';document.writeln(decodeURIComponent(str));