1.  re = /<div class="blockqte">((?:[^<]|<\/?s)*)<\/div>/g;
2.  re = /<div class="blockqte">((?:[^<]*|<\/?s)*)<\/div>/g;
3.  re = /<div class="blockqte">((?:.|\n)*?)<\/div>/g;

##</code><code>##

str = str.replace(re, "<pre>$1</pre>");