This is not a Perl-problem, but...
It's important to quote any value of attributes in HTML
So, try this: 
$THEMES_RADIOS .= "<INPUT TYPE=\"RADIO\" NAME=\"theme\" $CHECKED[$i] V
+ALUE=\"$i\" .
....

[download]
and so on....
The attribute CHECKED is XML-compatible in this form:

checked="checked"

In reply to Re: Radio Buttons not display properly by perlinux
in thread Radio Buttons not display properly by petre

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