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var str2 = new String(document.location)

if( (str.indexOf("(") != -1) && (str2.indexOf("messages.php") == -1) )
{
alert("К вам сова!)")

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<style>
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<script type="text/javascript">
function tag_spoiler(){
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open = string.substring(pos_l+1,string.length);
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close = string;
open = string;
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close = 'Показать спойлер';
open = 'Скрыть спойлер';
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 if( str.indexOf("[spoiler")!=-1 && internal==false) str=addSpoiler(str,0,false)
 return str;
}

function makeSpoiler(txt,open,close){
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}

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}
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