codice:
<script type="text/javascript" language="JavaScript">
<!--
function showprops(v){
	if(typeof(v)=='object'){
		var r=''
		for(var k in v){
			r+=v.name+'.'+k+'='+v[k]+'\n';
		}
		document.forms[0].results.value=r;
	}
}
//-->
</script>
<form>
<input type="text" value="pippo" name="prova" onfocus="showprops(this)">

<textarea name="results" cols="50" rows="170"></textarea>
</form>