The following text is extracted from a popup that escaped FF's blocker. Actually, it was broken and showed me the source code of the script running under the intended page, instead of the page itself. In it, I could recognize the stringified version of a Perl hashref, which sounds very suspect and makes me think of a program that is generated by something else itself. Whatever, I am so ignorant of web development matters...
Another thing I could see in that "page" was a long string of sequences like "%u42fc", thus I guessed they were unicode specifications, in hexadacimal. Then I wrote a tiny script to translate that string into HTML entities, so that I could paste it here; the result is as follows:
⪢픠⪠픢ꉚ❦蹪ⷊ뚸⧰廡೬훶ꊶꋺ㐹炡按⦠㩦ᢷᜠ⭡縍纋훳늶ⵧˢ߁馄⫤⛥⧅淡祠න秶ञꉜ훳꺶훰ꪶ屠༘翲ꆲ獲 읂黒셣ꇇ홟㮦秔㆓棃㪅䳒ⶒ溠⪄僳⪒䓅㞥䳒⪂寏ᾘ纠よ凥㶄沠㞙緔ⲉ䣅庅䛬㪀䃬ⲃ寁ᾘ岠㊓䛍序篵᪭廏㊏䣏અ濏㊈棅꿡쑍ﴈ鼖鸎鸍ｉ鸌鼎ꤑ쑊 긝葊ꉖ핁쟸
The fact that the resulting charachters are somewhat homogeneous makes me strongly think my guess was right. Otherwise I suspect I would have more easily got text from many different alphabets. However I wonder what language it is, and what it means, if it means anything at all... in the hope that's nothing offensive or outrageous. But perhaps it's only a piece of an advertisement for Mr. Sparkle!