Ho il seguente codice:

<HTML>
<HEAD>
<TITLE>Dynamically populating drop down, combobox, list box using JavaScript</TITLE>
</HEAD>
<BODY>
<form name="input" id="myForm" action="index2.php" method="get">
<?php Print("<input type=\"radio\" value=\"eu\" name=\"continent\" onClick='location.href=\"test4.php?continent=eu\"; ' />EU");
Print("<input type=\"radio\" value=\"usa\" name=\"continent\" onClick='location.href=\"test4.php?continent=usa\" ;'/>USA");
Print("<input type=\"radio\" value=\"other\" name=\"continent\" onClick='location.href=\"test4.php?continent=other \";'/>Other");

echo($_GET['newspaper_name']); ?>
<TABLE>
<tr>
<td id="cella2">Newspaper's name</td>
<td id="cella2"><?php Print("<input id=\"one_t\" type=\"text\" value=\"$newspaper_name\" name=\"newspaper_name\" />"); ?></td>
<td id="rosso"></td>
</tr>
</TABLE>
</form>
</BODY>
</HTML>

Quando clicco su radio button, perdo il valore inserito nella text area.

Come faccio a visualizzarlo ?