// AJAX framework. (c) 2007 Vaidas Balsys

// Function to create AJAX object
function ajaxObject() {
	var myObject;
	try {
		// Firefox, Opera 8.0+, Safari
		myObject = new XMLHttpRequest();
	} catch (e) {
		// Internet Explorer
		try {
			myObject = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				myObject = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
	return myObject;

}

// Function to create AJAX object
function ajaxSecondaryObject() {
	var myObject;
	try {
		// Firefox, Opera 8.0+, Safari
		myObject = new XMLHttpRequest();
	} catch (e) {
		// Internet Explorer
		try {
			myObject = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				myObject = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
	return myObject;

}

// Function for retrieving data from remote AJAX responder. Multiple text lines
// (each line ends with \n) are placed to select box - one line per option
// Required parameters:
// 		target - select box object, e.g. document.getElementById('mySelect')
// 		source - url string to AJAX responder, e.g. 'getdata.php?min=1&max=7'
//		prompt - first zero value option in select box, e.g. 'please select'
//				 leave it empty if you do not want this option
function getAjaxSelectData(target, source, prompt) {
	xmlHttp = new ajaxObject();
	xmlHttp.onreadystatechange = function() {
		if (xmlHttp.readyState == 4) {
			sourceData = xmlHttp.responseText;
			sourceData = sourceData.split("\n");
			while (target.length > 0) target.remove(0);
			if (prompt != '') {
				option = document.createElement('option');
				option.text = prompt;
				option.value = 0;
				try {
					target.add(option, null);
				} catch(ex) {
					target.add(option);
				}
			}
			for (i = 0; i < sourceData.length - 1; i++) {
				option = document.createElement('option');
				option.text = sourceData[i];
				option.value = sourceData[i];
				try {
					target.add(option, null);
				} catch(ex) {
					target.add(option);
				}
			}
		}
	}
	xmlHttp.open("POST", source, true);
	xmlHttp.send(null);
}

function getAjaxHtmlData(target, source) {
	xmlHttp = new ajaxObject();
	xmlHttp.onreadystatechange = function() {
		if (xmlHttp.readyState == 4) {
			sourceData = xmlHttp.responseText;
			target.innerHTML = sourceData;
		}
	}
	xmlHttp.open("GET", source,true);
	xmlHttp.send(null);
}

// -------- Carz.ie selector functions ----------

function createRequest(req, selModel){
	req += '&make=' + document.getElementById('make').value;
//	req += '&model=' + document.getElementById('model').value;
	req += '&model=' + selModel;
	req += '&price1=' + document.getElementById('price1').value;
	req += '&price2=' + document.getElementById('price2').value;
	req += '&age=' + document.getElementById('age').value;
	req += '&body=' + document.getElementById('body').value;
	req += '&fuel=' + document.getElementById('fuel').value;
	req += '&seller=' + document.getElementById('seller').value;
	req += '&area=' + document.getElementById('area').value;
	req += (document.getElementById('isleather').checked) ? '&isleather=1' : '&isleather=0';
	req += (document.getElementById('isalloys').checked) ? '&isalloys=1' : '&isalloys=0';
	req += (document.getElementById('iscd').checked) ? '&iscd=1' : '&iscd=0';
	req += (document.getElementById('isaircon').checked) ? '&isaircon=1' : '&isaircon=0';
	req += (document.getElementById('isauto').checked) ? '&isauto=1' : '&isauto=0';

//	alert (req);
	return req;
}

function updateSelector(target) {
	xmlHttp = new ajaxObject();
	xmlHttp.onreadystatechange = function() {
		if (xmlHttp.readyState < 4) {
			target.innerHTML = 'Searching';
		}
		if (xmlHttp.readyState == 4) {
			sourceData = xmlHttp.responseText;
			target.innerHTML = sourceData;
		}
	}
	request = createRequest('_ajax.php?task=getqtyonly', document.getElementById('model').value);
	xmlHttp.open("POST", request, true);
	xmlHttp.send(request);
}

function updateSelectorByMark(models, target, selModel) {
	xmlHttp = new ajaxObject();
	xmlHttp.onreadystatechange = function() {
		if (xmlHttp.readyState < 4) {
			target.innerHTML = 'Searching';
		}
		if (xmlHttp.readyState == 4) {
			sourceData = xmlHttp.responseText;
			sourceData = sourceData.split("\n");
			while (models.length > 0) models.remove(0);	// removing old model list

			option = document.createElement('option');
			option.text = 'All models';
			option.value = 0;
			try {	// for Firefox, Opera
				models.add(option, null);
			} catch(ex) {	// for IE
				models.add(option);
			}

			for (i = 1; i < sourceData.length - 1; i++) {
				option = document.createElement('option');
				option.text = sourceData[i];
				option.value = sourceData[i];
				option.style.background = '#f1fbdd';
				option.defaultSelected = (sourceData[i] == selModel);
				option.selected = (sourceData[i] == selModel);
				try {	// for Firefox, Opera
					models.add(option, null);
				} catch(ex) {	// for IE
					models.add(option);
				}
			}
			target.innerHTML = sourceData[0];
		}
	}
	request = createRequest('_ajax.php?task=getmodels', selModel);
//	alert(request);
	xmlHttp.open("POST", request, true);
	xmlHttp.send(request);
}

function updateAreas(country, areas, selArea) {
	while (areas.length > 0) areas.remove(0);	// removing old model list

	if (country != '0') {

		xmlHttp = new ajaxObject();
		request = '_ajax.php?task=getareas&ctry=' + country;
		xmlHttp.open("GET", request, false);
		xmlHttp.send(request);
		sourceData = xmlHttp.responseText;
		sourceData = sourceData.split("\n");

		for (i = 0; i < sourceData.length; i++) {
			option = document.createElement('option');
			sourceDataElements = sourceData[i].split("|");
			option.text = sourceDataElements[1];
			option.value = sourceDataElements[0];
			option.style.background = '#ddf1fb';
			option.defaultSelected = (sourceDataElements[0] == selArea);
			option.selected = (sourceDataElements[0] == selArea);
			try {	// for Firefox, Opera
				areas.add(option, null);
			} catch(ex) {	// for IE
				areas.add(option);
			}
		}

	} else {
		option = document.createElement('option');
		option.text = 'Visi rajonai';
		option.value = 0;
		try {	// for Firefox, Opera
			areas.add(option, null);
		} catch(ex) {	// for IE
			areas.add(option);
		}
	}
}

function updateModels(make, models, selModel) {
	while (models.length > 0) models.remove(0);	// removing old model list

	if (make != '0') {
		xmlHttp = new ajaxObject();
		xmlHttp.onreadystatechange = function() {
			if (xmlHttp.readyState == 4) {
				sourceData = xmlHttp.responseText;
				sourceData = sourceData.split("\n");

				for (i = 0; i < sourceData.length; i++) {
					option = document.createElement('option');
					option.text = sourceData[i];
					option.value = sourceData[i];
					option.style.background = '#ddf1fb';
					option.defaultSelected = (sourceData[i] == selModel);
					option.selected = (sourceData[i] == selModel);
					try {	// for Firefox, Opera
						models.add(option, null);
					} catch(ex) {	// for IE
						models.add(option);
					}
				}
			}
		}
		request = '_ajax.php?task=getmodellist&make=' + make;
 		xmlHttp.open("POST", request, true);
		xmlHttp.send(request);
	} else {
		option = document.createElement('option');
		option.text = 'Visi modeliai';
		option.value = 0;
		try {	// for Firefox, Opera
			models.add(option, null);
		} catch(ex) {	// for IE
			models.add(option);
		}
	}
}