You could grep for 

use Regexp::Common qw /URI/;
if m/window\.open\(["']($RE{URI}{HTTP})["']\)/ {
    print $1;
}

[download]

Perl 6 in German -- Difficult Sudoku

In reply to Re: Parsing content found in onClick and window.open Javascript calls by moritz
in thread Parsing content found in onClick and window.open Javascript calls by hacker

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