RE:habilitar una parte del formulario?
<html>
<head>
<title>Untitled</title>
<script language="JavaScript">
function inhabilita(){
document.all.texto3.style.backgroundColor = "#CCCCCC"
document.all.texto4.style.backgroundColor = "#CCCCCC"
}
function habilita(){
document.all.texto3.style.backgroundColor = "#FFFFFF"
document.all.texto4.style.backgroundColor = "#FFFFFF"
}
function campos(){
inhabilita("texto3")
}
</script>
</head>
<body onload="javascript:campos()">
<input type="radio" name="boton" value="habilita" onclick="habilita()"><br>
<input type="radio" name="boton" value="inhabilita" onclick="inhabilita()"><br>
<input type="text" name="texto1"><br>
<input type="text" name="texto2"><br>
<input type="text" name="texto3" onfocus="solo_lectura(this)"><br>
<input type="text" name="texto4" onfocus="solo_lectura(this)"><br>
</body>
</html>
