Código:
<!doctype html public "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title> New Document </title>
<script language="JavaScript">
<!--
function marcarTodos(){
if (document.forms[0].todos.checked){
document.forms[0].clt.checked = true;
}
else {
document.forms[0].clt.checked = false;
}
}
//-->
</script>
</head>
<body bgcolor="#FFFFFF">
<form method=post action="">
Marcar <input type="checkbox" name="todos" onClick="marcarTodos();"><br><br>
* <input type="radio" name="clt"> <br>
</form>
</body>
</html>
<hr noshade size=1><img src="http://www.gograph.com/Images-8712/ClipArt/cat03.gif" height="50" border=0 align="absmiddle"> <font size="2" face="verdana" color="#000000">
bet[/CODE]