function calcul_art10(){
		var tr_a10 = Number(document.getElementById("trdeprix_a10").value);
			if (tr_a10==1) {
				var p1_a10 = Number(document.getElementById("p1_a10").value);
				var q_a10 = Number(document.getElementById("q_a10").value);
					if (q_a10>=1) {
						var p_a10 = Number(p1_a10);
						var total_a10 = Number(p_a10 * q_a10);
						document.getElementById("total_a10").value = total_a10.toFixed(2);
						var ttc_a10 = Number(total_a10 * 1.196);
						document.getElementById("ttc_a10").value = ttc_a10.toFixed(2);
						}
				}
			else if (tr_a10==2) {
				var s1_a10 = Number(document.getElementById("seuilp1_a10").value);
                var p1_a10 = Number(document.getElementById("p1_a10").value);
				var p2_a10 = Number(document.getElementById("p2_a10").value);
                var q_a10 = Number(document.getElementById("q_a10").value);
					if (q_a10>=0 && q_a10<s1_a10) {
						var p_a10 = Number(p1_a10);
						var total_a10 = Number(p_a10 * q_a10);
						document.getElementById("total_a10").value = total_a10.toFixed(2);
						var ttc_a10 = Number(total_a10 * 1.196);
						document.getElementById("ttc_a10").value = ttc_a10.toFixed(2);
						}
					else {
						var p_a10 = Number(p2_a10);
						var total_a10 = Number(p_a10* q_a10);
						document.getElementById("total_a10").value = total_a10.toFixed(2);
						var ttc_a10 = Number(total_a10 * 1.196);
						document.getElementById("ttc_a10").value = ttc_a10.toFixed(2);
						}
				}
			else if (tr_a10==3) {
				var s1_a10 = Number(document.getElementById("seuilp1_a10").value);
				var s2_a10 = Number(document.getElementById("seuilp2_a10").value);
                var p1_a10 = Number(document.getElementById("p1_a10").value);
				var p2_a10 = Number(document.getElementById("p2_a10").value);
				var p3_a10 = Number(document.getElementById("p3_a10").value);
                var q_a10 = Number(document.getElementById("q_a10").value);
					if (q_a10>=0 && q_a10<s1_a10) {
						var p_a10 = Number(p1_a10);
						var total_a10 = Number(p_a10 * q_a10);
						document.getElementById("total_a10").value = total_a10.toFixed(2);
						var ttc_a10 = Number(total_a10 * 1.196);
						document.getElementById("ttc_a10").value = ttc_a10.toFixed(2);
						}
					else if (q_a10>=s1_a10 && q_a10<s2_a10) {
						var p_a10 = Number(p2_a10);
						var total_a10 = Number(p_a10 * q_a10);
						document.getElementById("total_a10").value = total_a10.toFixed(2);
						var ttc_a10 = Number(total_a10 * 1.196);
						document.getElementById("ttc_a10").value = ttc_a10.toFixed(2);
						}
					else {
						var p_a10 = Number(p3_a10);
						var total_a10 = Number(p_a10 * q_a10);
						document.getElementById("total_a10").value = total_a10.toFixed(2);
						var ttc_a10 = Number(total_a10 * 1.196);
						document.getElementById("ttc_a10").value = ttc_a10.toFixed(2);
						}
				}
    }