function gen_line(desc, prix1, prix2) {
				document.write('<tr>');
					document.write('<td class="left top" height="30">' + desc + '</td>');
					if (prix1.length == 0) prix1 = "&nbsp;";
					else
					prix1 = prix1 + " €";
					document.write('<td class="center top" width="65">' + prix1 + '</td>');
					if (prix2.length == 0)  prix2 = "&nbsp;";
					else
					prix2 = prix2 + " €";
					document.write('<td class="center top" width="65">' + prix2 + '</td>');
				document.write('</tr>');
	}