guarda se può andare:
codice:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Pagina senza titolo</title>
<script language="javascript" type="text/javascript">
// <!CDATA[
function window_onload()
{
var p = document.getElementById("p");
if(!p) return;
p.ValoreOriginale = "<%="valore originale"%>";
p.onblur = function()
{
document.getElementById("C1").checked = (this.value != this.ValoreOriginale);
}
}
// ]]>
</script>
</head>
<body onload="return window_onload()">
<form id="form1" action="?">
<input id="p" name="p" value="<%="valore originale"%>" />
<input type="checkbox" id="C1" name="C1" value="ON" disabled="disabled"/>
</form>
</body>
</html>