var cu_id_1=new Array(0,1,2,3,4,5);
var cu_name_1=new Array("Choose Course Type","Premium Intensive English Program","Intensive TOEFL IBT Preparation Program","Intensive IELTS Preparation Program","Intensive Business English Program","Intensive Elective Programs");
var w_id_1_1=new Array(0,2,3,4,6,8,10,12,24);
var w_w_1_1=new Array("Weeks","2","3","4","6","8","10","12","24");
var w_id_1_2=new Array(0,2,3,4,6,8,10,12,24);
var w_w_1_2=new Array("Weeks","2","3","4","6","8","10","12","24");
var w_id_1_3=new Array(0,2,3,4,6,8,10,12,24);
var w_w_1_3=new Array("Weeks","2","3","4","6","8","10","12","24");
var w_id_1_4=new Array(0,2,3,4,6,8,10,12,24);
var w_w_1_4=new Array("Weeks","2","3","4","6","8","10","12","24");
var w_id_1_5=new Array(0,2,3,4,6,8,10,12,24);
var w_w_1_5=new Array("Weeks","2","3","4","6","8","10","12","24");
var cu_id_2=new Array(0,1,5,7,8,9);
var cu_name_2=new Array("Choose Course Type","Premium Intensive English Program","Intensive Elective Programs","Semi Intensive English Program “Vacation-Study”","Cambridge Examination Courses","English Plus Sport Courses");
var w_id_2_1=new Array(0,2,3,4,6,8,10,12,24);
var w_w_2_1=new Array("Weeks","2","3","4","6","8","10","12","24");
var w_id_2_5=new Array(0,2,3,4,6,8,10,12,24);
var w_w_2_5=new Array("Weeks","2","3","4","6","8","10","12","24");
var w_id_2_7=new Array(0,2,3,4,6,8,10,12,24);
var w_w_2_7=new Array("Weeks","2","3","4","6","8","10","12","24");
var w_id_2_8=new Array(0,2,3,4,6,8,10,12,24);
var w_w_2_8=new Array("Weeks","2","3","4","6","8","10","12","24");
var w_id_2_9=new Array(0,2,3,4,6,8,10,12,24);
var w_w_2_9=new Array("Weeks","2","3","4","6","8","10","12","24");
var cu_id_3=new Array(0,12,13,14,15,16,17);
var cu_name_3=new Array("Choose Course Type","TOEFL –IELTS Preparation Programs","Business English Program","The Bridge Program for Children","ESL Intensive","ESL Semi-Intensive","ESL Super-Intensive");
var w_id_3_12=new Array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24);
var w_w_3_12=new Array("Weeks","1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24");
var w_id_3_13=new Array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24);
var w_w_3_13=new Array("Weeks","1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24");
var w_id_3_14=new Array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24);
var w_w_3_14=new Array("Weeks","1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24");
var w_id_3_15=new Array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24);
var w_w_3_15=new Array("Weeks","1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24");
var w_id_3_16=new Array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24);
var w_w_3_16=new Array("Weeks","1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24");
var w_id_3_17=new Array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24);
var w_w_3_17=new Array("Weeks","1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24");



	function cambia_curso(pos){
		var ciudad
		ciudad = document.zoni.ciudad[document.zoni.ciudad.selectedIndex].value
		if (ciudad != 0) {
			cursos=eval("cu_name_" + ciudad)
			cursos_id=eval("cu_id_" + ciudad)
			num_cursos = cursos.length
			document.zoni.curso.length = num_cursos
			for(i=0;i<num_cursos;i++){
				document.zoni.curso.options[i].value=cursos_id[i]
				document.zoni.curso.options[i].text=cursos[i]
				if (pos == cursos_id[i]){
					document.zoni.curso.options[i].selected = true;
				}
			}	
		}else{
			document.zoni.curso.length = 1;
			document.zoni.curso.options[0].value = "0";
			document.zoni.curso.options[0].text = "Choose a city";
			document.zoni.curso.options[0].selected = true;
		}
		document.zoni.semana.length = 1
		document.zoni.semana.options[0].value = "0"
		document.zoni.semana.options[0].text = "Choose a course"
	}
	
	function cambia_semana(pos){
		//tomo el valor del select del ciudad elegido
		var cursos
		cursos = document.zoni.curso[document.zoni.curso.selectedIndex].value
		ciudad = document.zoni.ciudad[document.zoni.ciudad.selectedIndex].value
		if (cursos != 0) {
			semanas=eval("w_w_"+ciudad+"_" + cursos)
			semanas_id=eval("w_id_"+ciudad+"_" + cursos)
			num_semanas = semanas.length
			document.zoni.semana.length = num_semanas
			for(i=0;i<num_semanas;i++){
				document.zoni.semana.options[i].value=semanas_id[i]
				document.zoni.semana.options[i].text=semanas[i]
				if (pos == semanas_id[i]){
					document.zoni.semana.options[i].selected = true
				}
			}	
		}else{
			document.zoni.semana.length = 1
			document.zoni.semana.options[0].value = "0"
			document.zoni.semana.options[0].text = "Choose a course"
			document.zoni.semana.options[0].selected = true
		}
		
	}