fix to parenthesis problem in filter window

[rachalc]

Hi
I had a problem with filter window when i make group in parenthesis,
the problem apears in this example

(( expresion ) or ( expresion )) and expresion

I try this with Internet Explorer, perhaps only here is failing.

but its soved adding "*1" into zm_html_view_filter.php in lines 147 and 148

bracket_count += form.obr<?= $i ?>.value * 1;
bracket_count -= form.cbr<?= $i ?>.value * 1;

i hope that it is to you useful.

[zoneminder]

Thanks. I will check this out and add a fix into the next version.

Phil