function UpdateTotal() {
		// var price = cb.value.split("_")[2] ;

		var totalprice100 = 0
		for (i = 1; i < document.forms[0].length ; i++) {
			var el = document.forms[0][i]
			if (el.id.indexOf("cbReservation") > 0 ) {
				cb = el ;
				if (cb.checked) {
					// price is eurocent integer
					var price = (cb.value.split("_")[2] * 1)
					totalprice100 += price
					}
				}
			}

		// integer part : 9250 (/100)> 92.50 (floor)> 92 (+"")> "92"
		totalprice_part1 = Math.floor(totalprice100 / 100) + "";
		// float part, padded :  9250 (%100)> 50 (+100)> 150 (+"")> "150" (substr)> "50"
		totalprice_part2 = ((100 +  Math.floor(totalprice100 % 100)) + "").substr(1) ;
		
		document.forms[0].elements("tbTotal").value = String.fromCharCode(8364) + totalprice_part1 + ',' + totalprice_part2
		}