/*******************************************************************************/
/*                                                                             */
/*                           Functions For the Ajax Form                       */
/*		                         Jaime. 01/02/2007                             */
/*                                                                             */
/*******************************************************************************/

var language = '';
var xmlHttp = new Array(15);
var timing = new Array(15);
var processLoad = "Please wait";
var dot = ".";
var processWait = "";
var any = "Any";

function initMenu(nation){
	var nations = document.getElementById('ajx_nation');
	var regions = document.getElementById('ajx_region');
	retrieveData(1, 0, 'ajx_nation', '', 0, nation);
	nations.onchange=function(){retrieveData(2, 0, 'ajx_region', '', nations.options[nations.selectedIndex].value)};
	retrieveData(2, 0, 'ajx_region', '', nation);
}

function initMenuMallorca(nation){
	var nations = document.getElementById('ajx_nation');
	var regions = document.getElementById('ajx_region');
	retrieveData(1, 0, 'ajx_nation', '', 'mallorca', nation);
	nations.onchange=function(){retrieveData(2, 0, 'ajx_region', '', nations.options[nations.selectedIndex].value)};
	retrieveData(2, 0, 'ajx_region', '', nation);
}

function initForm(nation, region, town){
	var nations = document.getElementById('ajx_nation_form');
	var regions = document.getElementById('ajx_region_form');
	var towns = document.getElementById('ajx_town_form');

	if (typeof nation != "undefined") {
		retrieveData(1, 0, 'ajx_nation_form', '', 0, nation);
		if (typeof region != "undefined") {
			retrieveData(2, 0, 'ajx_region_form', '', nation, region);
			if (typeof town != "undefined") retrieveData(3, 0, 'ajx_town_form', '', region, town);
		}else{
			retrieveData(2, 0, 'ajx_region_form', '', nation);
		}
	}else{
		retrieveData(1, 0, 'ajx_nation_form', '', 0);
		regions.options[0] = new Option(any, any);
	}
	
	if (towns != null) {
		nations.onchange = function(){retrieveData(2, 0, 'ajx_region_form', '', nations.options[nations.selectedIndex].value); retrieveData(3, 0, 'ajx_town_form', '', '')};		
		regions.onchange = function(){retrieveData(3, 0, 'ajx_town_form', '', regions.options[regions.selectedIndex].value)};
		towns.options[0] = new Option(any, any);
	}else{
		nations.onchange = function(){retrieveData(2, 0, 'ajx_region_form', '', nations.options[nations.selectedIndex].value)};
	}
}

function initFormReg(nation, region, town){
	var nations = document.getElementById('ajx_nation_form');
	var regions = document.getElementById('ajx_region_form');
	var towns = document.getElementById('ajx_town_form');

	if (typeof region == "undefined") region = '';
	if (typeof town == "undefined") town = '';
	
	retrieveData(4, 0, 'ajx_nation_form', '', 0, nation);
	
	if (towns != null) {
		if (town != '') {
			retrieveData(5, 0, 'ajx_region_form', '', nation, region);
			retrieveData(6, 0, 'ajx_town_form', '', region, town);
		}else retrieveData(5, 6, 'ajx_region_form', 'ajx_town_form', nation, region);

		nations.onchange = function(){retrieveData(5, 6, 'ajx_region_form', 'ajx_town_form', nations.options[nations.selectedIndex].value)};
		regions.onchange = function(){retrieveData(6, 0, 'ajx_town_form', '', regions.options[regions.selectedIndex].value)};
	}else{
		retrieveData(5, 0, 'ajx_region_form', '', nation, region);
		nations.onchange = function(){retrieveData(5, 0, 'ajx_region_form', '', nations.options[nations.selectedIndex].value)};
	}
}


/* Function that shows the message "Please Wait" with the dot animation */
function wait(id, i){
	var dropdown = document.getElementById(id);
	dropdown.options.length = 0;
	dropdown.options[0] = new Option(processLoad + processWait, '');
	processWait = (processWait.length == 3)?"":processWait + dot;
	timing[i] = setTimeout("wait('"+id+"', "+i+")", 500);
}

/* Function that stops the animation */
function stop(i){
	clearTimeout(timing[i]);
}

/* Function that does the request to the asp page containing the queries */
/* op: number of the query inside the asp page */
/* op2: for the cases that the first query triggers a second one */
/* id: identifier of the dropdown to load with the data recovered with op */
/* id2: identifier of the dropdown to load with the data recovered with op2 */
/* param1: optional parameter for the query in op */
/* param2: optional parameter for selecting a default value in the dropdown id */
function retrieveData(op, op2, id, id2, param1, param2){
	var i=0;
	var dropdown = document.getElementById(id);

	while (xmlHttp[i]!=null && i<15) i++;
	dropdown.disabled = true;
    if (param1 != "mallorca"){
		timing[i] = setTimeout("wait('"+id+"', "+i+")", 500);
    }
	xmlHttp[i] = GetXmlHttpObject();
	
	if (xmlHttp[i]==null){
	  alert ("Your browser does not support AJAX!");
	  return;
	} 
    if (param1 != "mallorca"){
   		xmlHttp[i].onreadystatechange = function(){fillDropDown(op2, id, id2, i, param2)};  
    }  
	
		xmlHttp[i].open("GET","http://www.abc-mallorca.com/ajaxqueries.asp?lng=2&op="+op+"&param="+param1,true);
	
	xmlHttp[i].send(null);
}

/* Function that loads a dropdown with the data recovered by xmlHttpRequest */
/* op2: for the cases that the first query triggers a second one */
/* id: identifier of the dropdown to load with the data recovered with op */
/* id2: identifier of the dropdown to load with the data recovered with op2 */
/* i: the index of the xmlHttp array that contains the xmlHttpRequest object to use on this operation */
/* param2: optional parameter for selecting a default value in the dropdown id */
function fillDropDown(op2, id, id2, i, param){
	if (xmlHttp[i].readyState==4){
		stop(i);
		var dropdown = document.getElementById(id);
		var optionsArray = xmlHttp[i].responseText.split('|');
		var textAndValue;

		xmlHttp[i] = null;
		dropdown.options.length = 0;
		for (var i=0; i<optionsArray.length; i++){
			textAndValue = optionsArray[i].split("#");
			dropdown.options[i] = new Option(textAndValue[0], textAndValue[1]);
			if ((typeof param != "undefined") && (textAndValue[1] == param)) dropdown.options[i].selected = true;
		}
		dropdown.disabled = false;
		if (op2 != 0) retrieveData(op2, 0, id2, '', dropdown.options[0].value);
	}
}

function GetXmlHttpObject()
{
var xmlHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
     xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
  }
return xmlHttp;
}