function parent_choice(city,area,city_area,select_city,select_area){

	if(select_city != ""){
		var i=0;
		var sec_i=0;
		area.disabled=false;
		area.length=1;
		for(var j=0;j<city_area.length;j++){
			if(city_area.options[j].value == select_city){  
				var oOption = document.createElement("OPTION");

				oOption.innerHTML = city_area.options[j].innerHTML;
				oOption.value = city_area.options[j].id;
				oOption.id = city_area.options[j].id;
				area.appendChild(oOption);
				
				i=i+1;
				if(select_area != "" && select_area==city_area.options[j].id){
					sec_i=i;
				}
			}
		}
		if(select_area != "" && i != 0){
			area.selectedIndex=sec_i;
		}
		if(area.length==1){area.disabled=true;}
	}
	else{
		area.selectedIndex=0;
		area.disabled=true;
	}
}

function parent_choice3(city,area,hotel,city_area,select_city){
	if(select_city != ""){
		area.disabled=false;
		area.length=1;
		area.options[0].selected;
		for(var j=0;j<city_area.length;j++){
			if(city_area.options[j].value == select_city){  
				var oOption = document.createElement("OPTION");
				area.add(oOption);
				oOption.innerText = city_area.options[j].innerText;
				oOption.value = city_area.options[j].id;
				oOption.id = city_area.options[j].id;
			}
		}
	}
	else{
		area.selectedIndex=0;
		area.disabled=true;
	}
	hotel.selectedIndex=0;
	hotel.disabled=true;
}


function parent_choice4(city,area,hotel,package,city_area,select_city){
	if(select_city != ""){
		area.disabled=false;
		area.length=1;
		area.options[0].selected;
		for(var j=0;j<city_area.length;j++){
			if(city_area.options[j].value == select_city){  
				var oOption = document.createElement("OPTION");
				area.add(oOption);
				oOption.innerText = city_area.options[j].innerText;
				oOption.value = city_area.options[j].id;
				oOption.id = city_area.options[j].id;
			}
		}
	}
	else{
		area.selectedIndex=0;
		area.disabled=true;			
	}
	hotel.selectedIndex=0;
	hotel.disabled=true;
	package.selectedIndex=0;
	package.disabled=true;
}