var obj_ddl_dis;

function Load_District(CityId, DistrictId){
    var cur_obj = document.getElementById(CityId);
    ajax_LoadDistrict(cur_obj, DistrictId);
}//
        
/////////////////////////////////////////////////////////////////////
function ajax_LoadDistrict(cur_obj, ddl_disId){
	////						
	obj_ddl_dis = document.getElementById(ddl_disId);
	
	// Tao doi tuong XmlHttpRequest	
	ajax_create();
	// Neu doi tuong duoc tao thanh cong thi tien hanh send request
	if(HttpRequest) {
		cityId = cur_obj.value
		var url = "process/Get_District.aspx?cityid=" + cityId;
		HttpRequest.onreadystatechange = proc_District_Load;
		HttpRequest.open("GET", url, true);
		HttpRequest.send("");
	}//
}//end ajax_LoadDistrict
////
function proc_District_Load(){
	// Khi du lieu dc tra ve thanh cong
    if (HttpRequest.readyState == 4) {
		// Neu du lieu nhan ve tron ven
        if (HttpRequest.status == 200) {
            //
			for (var count = obj_ddl_dis.options.length-1; count >-1; count--)
	        {
		        obj_ddl_dis.options[count] = null;
	        }
			//
			if(HttpRequest.responseText != ''){
				//alert(HttpRequest.responseText);				
				eval(HttpRequest.responseText);
				////	
				var textValue; 
				var Value;
	            var optionItem;			
				for(var i = 0; i < array_district.length; i++){					
					textValue 	= array_district[i][1];
					Value       = array_district[i][0];
					optionItem  = new Option( textValue, Value,  false, false);
					obj_ddl_dis.options[obj_ddl_dis.length] = optionItem;
				}//
				 
			}//end if 3
		}//end if 2
    }//end if 1
}//end  proc_District_Load

/////////////////////////////////////////////////////////////////////