function Niveau() {
	
	code_dis = document.Form1a.s1.selectedIndex;
	code_niv = document.Form1a.s2.selectedIndex;
	val_niv = document.Form1a.s2.options[code_niv].value;
	
	if (code_dis != 0){
		lg = document.Form1a.s2.length;
  		// On vide la liste
		for (i = lg - 1; i >= 0; i--) {
			document.Form1a.s2.options[i] = null;
		}

	if (document.Form1a.s1.options[code_dis].value == 1) {
	document.Form1a.s2.length = 3;
	document.Form1a.s2.options[0].value = "";
	document.Form1a.s2.options[0].text  = "Tous";
	if (val_niv == "") document.Form1a.s2.options[0].selected = true;
	document.Form1a.s2.options[1].value = 2;
	document.Form1a.s2.options[1].text  = "Cycle 2";
	if (val_niv == "2") document.Form1a.s2.options[1].selected = true;
	document.Form1a.s2.options[2].value = 3;
	document.Form1a.s2.options[2].text  = "Cycle 3";
	if (val_niv == "3") document.Form1a.s2.options[2].selected = true;
	}

	if (document.Form1a.s1.options[code_dis].value == 2) {
	document.Form1a.s2.length = 2;
	document.Form1a.s2.options[0].value = "";
	document.Form1a.s2.options[0].text  = "Tous";
	if (val_niv == "") document.Form1a.s2.options[0].selected = true;
	document.Form1a.s2.options[1].value = 7;
	document.Form1a.s2.options[1].text  = "3e";
	if (val_niv == "7") document.Form1a.s2.options[1].selected = true;
	}

	if (document.Form1a.s1.options[code_dis].value == 3) {
	document.Form1a.s2.length = 3;
	document.Form1a.s2.options[0].value = "";
	document.Form1a.s2.options[0].text  = "Tous";
	if (val_niv == "") document.Form1a.s2.options[0].selected = true;
	document.Form1a.s2.options[1].value = 4;
	document.Form1a.s2.options[1].text  = "6e";
	if (val_niv == "4") document.Form1a.s2.options[1].selected = true;
	document.Form1a.s2.options[2].value = 53;
	document.Form1a.s2.options[2].text  = "École d'ingénieur - génie mathématique";
	if (val_niv == "53") document.Form1a.s2.options[2].selected = true;
	}

	if (document.Form1a.s1.options[code_dis].value == 4) {
	document.Form1a.s2.length = 6;
	document.Form1a.s2.options[0].value = "";
	document.Form1a.s2.options[0].text  = "Tous";
	if (val_niv == "") document.Form1a.s2.options[0].selected = true;
	document.Form1a.s2.options[1].value = 5;
	document.Form1a.s2.options[1].text  = "5e";
	if (val_niv == "5") document.Form1a.s2.options[1].selected = true;
	document.Form1a.s2.options[2].value = 6;
	document.Form1a.s2.options[2].text  = "4e";
	if (val_niv == "6") document.Form1a.s2.options[2].selected = true;
	document.Form1a.s2.options[3].value = 8;
	document.Form1a.s2.options[3].text  = "2nde";
	if (val_niv == "8") document.Form1a.s2.options[3].selected = true;
	document.Form1a.s2.options[4].value = 9;
	document.Form1a.s2.options[4].text  = "1re";
	if (val_niv == "9") document.Form1a.s2.options[4].selected = true;
	document.Form1a.s2.options[5].value = 54;
	document.Form1a.s2.options[5].text  = "Collège";
	if (val_niv == "54") document.Form1a.s2.options[5].selected = true;
	}

	if (document.Form1a.s1.options[code_dis].value == 8) {
	document.Form1a.s2.length = 3;
	document.Form1a.s2.options[0].value = "";
	document.Form1a.s2.options[0].text  = "Tous";
	if (val_niv == "") document.Form1a.s2.options[0].selected = true;
	document.Form1a.s2.options[1].value = 7;
	document.Form1a.s2.options[1].text  = "3e";
	if (val_niv == "7") document.Form1a.s2.options[1].selected = true;
	document.Form1a.s2.options[2].value = 8;
	document.Form1a.s2.options[2].text  = "2nde";
	if (val_niv == "8") document.Form1a.s2.options[2].selected = true;
	}

	if (document.Form1a.s1.options[code_dis].value == 9) {
	document.Form1a.s2.length = 10;
	document.Form1a.s2.options[0].value = "";
	document.Form1a.s2.options[0].text  = "Tous";
	if (val_niv == "") document.Form1a.s2.options[0].selected = true;
	document.Form1a.s2.options[1].value = 6;
	document.Form1a.s2.options[1].text  = "4e";
	if (val_niv == "6") document.Form1a.s2.options[1].selected = true;
	document.Form1a.s2.options[2].value = 7;
	document.Form1a.s2.options[2].text  = "3e";
	if (val_niv == "7") document.Form1a.s2.options[2].selected = true;
	document.Form1a.s2.options[3].value = 8;
	document.Form1a.s2.options[3].text  = "2nde";
	if (val_niv == "8") document.Form1a.s2.options[3].selected = true;
	document.Form1a.s2.options[4].value = 10;
	document.Form1a.s2.options[4].text  = "Terminale";
	if (val_niv == "10") document.Form1a.s2.options[4].selected = true;
	document.Form1a.s2.options[5].value = 50;
	document.Form1a.s2.options[5].text  = "Bac pro";
	if (val_niv == "50") document.Form1a.s2.options[5].selected = true;
	document.Form1a.s2.options[6].value = 55;
	document.Form1a.s2.options[6].text  = "Lycée";
	if (val_niv == "55") document.Form1a.s2.options[6].selected = true;
	document.Form1a.s2.options[7].value = 62;
	document.Form1a.s2.options[7].text  = "spécialité sciences physiques";
	if (val_niv == "62") document.Form1a.s2.options[7].selected = true;
	document.Form1a.s2.options[8].value = 67;
	document.Form1a.s2.options[8].text  = "2nde-Terminale";
	if (val_niv == "67") document.Form1a.s2.options[8].selected = true;
	document.Form1a.s2.options[9].value = 68;
	document.Form1a.s2.options[9].text  = "4e-3e";
	if (val_niv == "68") document.Form1a.s2.options[9].selected = true;
	}

	if (document.Form1a.s1.options[code_dis].value == 18) {
	document.Form1a.s2.length = 3;
	document.Form1a.s2.options[0].value = "";
	document.Form1a.s2.options[0].text  = "Tous";
	if (val_niv == "") document.Form1a.s2.options[0].selected = true;
	document.Form1a.s2.options[1].value = 50;
	document.Form1a.s2.options[1].text  = "Bac pro";
	if (val_niv == "50") document.Form1a.s2.options[1].selected = true;
	document.Form1a.s2.options[2].value = 65;
	document.Form1a.s2.options[2].text  = "2nde-Terminale";
	if (val_niv == "65") document.Form1a.s2.options[2].selected = true;
	}

	if (document.Form1a.s1.options[code_dis].value == 32) {
	document.Form1a.s2.length = 2;
	document.Form1a.s2.options[0].value = "";
	document.Form1a.s2.options[0].text  = "Tous";
	if (val_niv == "") document.Form1a.s2.options[0].selected = true;
	document.Form1a.s2.options[1].value = 51;
	document.Form1a.s2.options[1].text  = "Faculté des lettres et des sciences humaines";
	if (val_niv == "51") document.Form1a.s2.options[1].selected = true;
	}

	if (document.Form1a.s1.options[code_dis].value == 34) {
	document.Form1a.s2.length = 3;
	document.Form1a.s2.options[0].value = "";
	document.Form1a.s2.options[0].text  = "Tous";
	if (val_niv == "") document.Form1a.s2.options[0].selected = true;
	document.Form1a.s2.options[1].value = 52;
	document.Form1a.s2.options[1].text  = "École d'arts";
	if (val_niv == "52") document.Form1a.s2.options[1].selected = true;
	document.Form1a.s2.options[2].value = 66;
	document.Form1a.s2.options[2].text  = "2nde-Terminale";
	if (val_niv == "66") document.Form1a.s2.options[2].selected = true;
	}

	if (document.Form1a.s1.options[code_dis].value == 35) {
	document.Form1a.s2.length = 7;
	document.Form1a.s2.options[0].value = "";
	document.Form1a.s2.options[0].text  = "Tous";
	if (val_niv == "") document.Form1a.s2.options[0].selected = true;
	document.Form1a.s2.options[1].value = 11;
	document.Form1a.s2.options[1].text  = "BEP";
	if (val_niv == "11") document.Form1a.s2.options[1].selected = true;
	document.Form1a.s2.options[2].value = 12;
	document.Form1a.s2.options[2].text  = "CAP";
	if (val_niv == "12") document.Form1a.s2.options[2].selected = true;
	document.Form1a.s2.options[3].value = 50;
	document.Form1a.s2.options[3].text  = "Bac pro";
	if (val_niv == "50") document.Form1a.s2.options[3].selected = true;
	document.Form1a.s2.options[4].value = 54;
	document.Form1a.s2.options[4].text  = "Collège";
	if (val_niv == "54") document.Form1a.s2.options[4].selected = true;
	document.Form1a.s2.options[5].value = 55;
	document.Form1a.s2.options[5].text  = "Lycée";
	if (val_niv == "55") document.Form1a.s2.options[5].selected = true;
	document.Form1a.s2.options[6].value = 61;
	document.Form1a.s2.options[6].text  = "1re-Terminale STI";
	if (val_niv == "61") document.Form1a.s2.options[6].selected = true;
	}

	if (document.Form1a.s1.options[code_dis].value == 39) {
	document.Form1a.s2.length = 2;
	document.Form1a.s2.options[0].value = "";
	document.Form1a.s2.options[0].text  = "Tous";
	if (val_niv == "") document.Form1a.s2.options[0].selected = true;
	document.Form1a.s2.options[1].value = 10;
	document.Form1a.s2.options[1].text  = "Terminale";
	if (val_niv == "10") document.Form1a.s2.options[1].selected = true;
	}

	if (document.Form1a.s1.options[code_dis].value == 40) {
	document.Form1a.s2.length = 3;
	document.Form1a.s2.options[0].value = "";
	document.Form1a.s2.options[0].text  = "Tous";
	if (val_niv == "") document.Form1a.s2.options[0].selected = true;
	document.Form1a.s2.options[1].value = 55;
	document.Form1a.s2.options[1].text  = "Lycée";
	if (val_niv == "55") document.Form1a.s2.options[1].selected = true;
	document.Form1a.s2.options[2].value = 61;
	document.Form1a.s2.options[2].text  = "1re-Terminale STI";
	if (val_niv == "61") document.Form1a.s2.options[2].selected = true;
	}

	}else {
	if (document.Form1a.s1.options[code_dis].value == "") {
	document.Form1a.s2.length = 26;
	document.Form1a.s2.options[0].value = "";
	document.Form1a.s2.options[0].text  = "Tous";
	if (val_niv == "") document.Form1a.s2.options[0].selected = true;
	document.Form1a.s2.options[1].value = 2;
	document.Form1a.s2.options[1].text  = "Cycle 2";
	if (val_niv == "2") document.Form1a.s2.options[1].selected = true;
	document.Form1a.s2.options[2].value = 3;
	document.Form1a.s2.options[2].text  = "Cycle 3";
	if (val_niv == "3") document.Form1a.s2.options[2].selected = true;
	document.Form1a.s2.options[3].value = 4;
	document.Form1a.s2.options[3].text  = "6e";
	if (val_niv == "4") document.Form1a.s2.options[3].selected = true;
	document.Form1a.s2.options[4].value = 5;
	document.Form1a.s2.options[4].text  = "5e";
	if (val_niv == "5") document.Form1a.s2.options[4].selected = true;
	document.Form1a.s2.options[5].value = 6;
	document.Form1a.s2.options[5].text  = "4e";
	if (val_niv == "6") document.Form1a.s2.options[5].selected = true;
	document.Form1a.s2.options[6].value = 7;
	document.Form1a.s2.options[6].text  = "3e";
	if (val_niv == "7") document.Form1a.s2.options[6].selected = true;
	document.Form1a.s2.options[7].value = 8;
	document.Form1a.s2.options[7].text  = "2nde";
	if (val_niv == "8") document.Form1a.s2.options[7].selected = true;
	document.Form1a.s2.options[8].value = 9;
	document.Form1a.s2.options[8].text  = "1re";
	if (val_niv == "9") document.Form1a.s2.options[8].selected = true;
	document.Form1a.s2.options[9].value = 10;
	document.Form1a.s2.options[9].text  = "Terminale";
	if (val_niv == "10") document.Form1a.s2.options[9].selected = true;
	document.Form1a.s2.options[10].value = 11;
	document.Form1a.s2.options[10].text  = "BEP";
	if (val_niv == "11") document.Form1a.s2.options[10].selected = true;
	document.Form1a.s2.options[11].value = 12;
	document.Form1a.s2.options[11].text  = "CAP";
	if (val_niv == "12") document.Form1a.s2.options[11].selected = true;
	document.Form1a.s2.options[12].value = 50;
	document.Form1a.s2.options[12].text  = "Bac pro";
	if (val_niv == "50") document.Form1a.s2.options[12].selected = true;
	document.Form1a.s2.options[13].value = 51;
	document.Form1a.s2.options[13].text  = "Faculté des lettres et des sciences humaines";
	if (val_niv == "51") document.Form1a.s2.options[13].selected = true;
	document.Form1a.s2.options[14].value = 52;
	document.Form1a.s2.options[14].text  = "École d'arts";
	if (val_niv == "52") document.Form1a.s2.options[14].selected = true;
	document.Form1a.s2.options[15].value = 53;
	document.Form1a.s2.options[15].text  = "École d'ingénieur - génie mathématique";
	if (val_niv == "53") document.Form1a.s2.options[15].selected = true;
	document.Form1a.s2.options[16].value = 54;
	document.Form1a.s2.options[16].text  = "Collège";
	if (val_niv == "54") document.Form1a.s2.options[16].selected = true;
	document.Form1a.s2.options[17].value = 55;
	document.Form1a.s2.options[17].text  = "Lycée";
	if (val_niv == "55") document.Form1a.s2.options[17].selected = true;
	document.Form1a.s2.options[18].value = 61;
	document.Form1a.s2.options[18].text  = "1re-Terminale STI";
	if (val_niv == "61") document.Form1a.s2.options[18].selected = true;
	document.Form1a.s2.options[19].value = 62;
	document.Form1a.s2.options[19].text  = "spécialité sciences physiques";
	if (val_niv == "62") document.Form1a.s2.options[19].selected = true;
	document.Form1a.s2.options[20].value = 63;
	document.Form1a.s2.options[20].text  = "spécialité sciences physiques";
	if (val_niv == "63") document.Form1a.s2.options[20].selected = true;
	document.Form1a.s2.options[21].value = 64;
	document.Form1a.s2.options[21].text  = "spécialité sciences physiques";
	if (val_niv == "64") document.Form1a.s2.options[21].selected = true;
	document.Form1a.s2.options[22].value = 65;
	document.Form1a.s2.options[22].text  = "2nde-Terminale";
	if (val_niv == "65") document.Form1a.s2.options[22].selected = true;
	document.Form1a.s2.options[23].value = 66;
	document.Form1a.s2.options[23].text  = "2nde-Terminale";
	if (val_niv == "66") document.Form1a.s2.options[23].selected = true;
	document.Form1a.s2.options[24].value = 67;
	document.Form1a.s2.options[24].text  = "2nde-Terminale";
	if (val_niv == "67") document.Form1a.s2.options[24].selected = true;
	document.Form1a.s2.options[25].value = 68;
	document.Form1a.s2.options[25].text  = "4e-3e";
	if (val_niv == "68") document.Form1a.s2.options[25].selected = true;
	}

	
	}
}  

function Discipline() {
	
	code_niv = document.Form1a.s2.selectedIndex;
	code_dis = document.Form1a.s1.selectedIndex;
	val_dis = document.Form1a.s1.options[code_dis].value;

	if (code_niv != 0){	
		lg = document.Form1a.s1.length;	  
		// On vide la liste
		for (i = lg - 1; i >= 0; i--) {
			document.Form1a.s1.options[i] = null;
		}

	if (document.Form1a.s2.options[code_niv].value == 2) {
	document.Form1a.s1.length = 2
	document.Form1a.s1.options[0].value = "";
	document.Form1a.s1.options[0].text  = "Tous";
	if (val_dis == "") document.Form1a.s1.options[0].selected = true;
	document.Form1a.s1.options[1].value = 1;
	document.Form1a.s1.options[1].text  = "Professeur des écoles";
	if (val_dis == "1") document.Form1a.s1.options[1].selected = true;
	}

	if (document.Form1a.s2.options[code_niv].value == 3) {
	document.Form1a.s1.length = 2
	document.Form1a.s1.options[0].value = "";
	document.Form1a.s1.options[0].text  = "Tous";
	if (val_dis == "") document.Form1a.s1.options[0].selected = true;
	document.Form1a.s1.options[1].value = 1;
	document.Form1a.s1.options[1].text  = "Professeur des écoles";
	if (val_dis == "1") document.Form1a.s1.options[1].selected = true;
	}

	if (document.Form1a.s2.options[code_niv].value == 4) {
	document.Form1a.s1.length = 2
	document.Form1a.s1.options[0].value = "";
	document.Form1a.s1.options[0].text  = "Tous";
	if (val_dis == "") document.Form1a.s1.options[0].selected = true;
	document.Form1a.s1.options[1].value = 3;
	document.Form1a.s1.options[1].text  = "Professeur de mathématiques";
	if (val_dis == "3") document.Form1a.s1.options[1].selected = true;
	}

	if (document.Form1a.s2.options[code_niv].value == 5) {
	document.Form1a.s1.length = 2
	document.Form1a.s1.options[0].value = "";
	document.Form1a.s1.options[0].text  = "Tous";
	if (val_dis == "") document.Form1a.s1.options[0].selected = true;
	document.Form1a.s1.options[1].value = 4;
	document.Form1a.s1.options[1].text  = "Professeur d'histoire et de géographie";
	if (val_dis == "4") document.Form1a.s1.options[1].selected = true;
	}

	if (document.Form1a.s2.options[code_niv].value == 6) {
	document.Form1a.s1.length = 3
	document.Form1a.s1.options[0].value = "";
	document.Form1a.s1.options[0].text  = "Tous";
	if (val_dis == "") document.Form1a.s1.options[0].selected = true;
	document.Form1a.s1.options[1].value = 4;
	document.Form1a.s1.options[1].text  = "Professeur d'histoire et de géographie";
	if (val_dis == "4") document.Form1a.s1.options[1].selected = true;
	document.Form1a.s1.options[2].value = 9;
	document.Form1a.s1.options[2].text  = "Professeur de physique et de chimie";
	if (val_dis == "9") document.Form1a.s1.options[2].selected = true;
	}

	if (document.Form1a.s2.options[code_niv].value == 7) {
	document.Form1a.s1.length = 4
	document.Form1a.s1.options[0].value = "";
	document.Form1a.s1.options[0].text  = "Tous";
	if (val_dis == "") document.Form1a.s1.options[0].selected = true;
	document.Form1a.s1.options[1].value = 2;
	document.Form1a.s1.options[1].text  = "Professeur de technologie";
	if (val_dis == "2") document.Form1a.s1.options[1].selected = true;
	document.Form1a.s1.options[2].value = 8;
	document.Form1a.s1.options[2].text  = "Professeur de français";
	if (val_dis == "8") document.Form1a.s1.options[2].selected = true;
	document.Form1a.s1.options[3].value = 9;
	document.Form1a.s1.options[3].text  = "Professeur de physique et de chimie";
	if (val_dis == "9") document.Form1a.s1.options[3].selected = true;
	}

	if (document.Form1a.s2.options[code_niv].value == 8) {
	document.Form1a.s1.length = 4
	document.Form1a.s1.options[0].value = "";
	document.Form1a.s1.options[0].text  = "Tous";
	if (val_dis == "") document.Form1a.s1.options[0].selected = true;
	document.Form1a.s1.options[1].value = 4;
	document.Form1a.s1.options[1].text  = "Professeur d'histoire et de géographie";
	if (val_dis == "4") document.Form1a.s1.options[1].selected = true;
	document.Form1a.s1.options[2].value = 8;
	document.Form1a.s1.options[2].text  = "Professeur de français";
	if (val_dis == "8") document.Form1a.s1.options[2].selected = true;
	document.Form1a.s1.options[3].value = 9;
	document.Form1a.s1.options[3].text  = "Professeur de physique et de chimie";
	if (val_dis == "9") document.Form1a.s1.options[3].selected = true;
	}

	if (document.Form1a.s2.options[code_niv].value == 9) {
	document.Form1a.s1.length = 2
	document.Form1a.s1.options[0].value = "";
	document.Form1a.s1.options[0].text  = "Tous";
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