function seleziona_testo() {
	if(dd.ie) { 
		var selectedText = document.selection;
		if (selectedText.type == 'Text') {
			var newRange = selectedText.createRange();
			if(newRange.text != '') {
				document.getElementById('commento').value = newRange.text;
				document.getElementById('commento').style.color = '#000';
			}
		}
	}
	else if(dd.op || dd.n6) {
		if(window.getSelection() !='') { 
			document.getElementById('commento').value=window.getSelection();
			document.getElementById('commento').style.color = '#000';
		}
	}
}