var req = null;

function InitXMLHttpRequest() {
	// Make a new XMLHttp object
	if (window.XMLHttpRequest) {
		req = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		req = new ActiveXObject("Microsoft.XMLHTTP");
	}
//	if (typeof window.ActiveXObject != 'undefined' ) req = new ActiveXObject("Microsoft.XMLHTTP");
//	else req = new XMLHttpRequest();
}

function SelectCountry(section, destination) {
	InitXMLHttpRequest();
	// Load the result from the response page
	if (req) {
		req.onreadystatechange = function() {
			if (req.readyState == 4) {
				destination.innerHTML = req.responseText;
			} else {
				destination.innerHTML = "Loading data...";
			}
		}
		req.open("GET", "location.php?sec=" + section + "&sel=country", true);
		req.send(null);
	} else {
		destination.innerHTML = 'Browser unable to create XMLHttp Object';
	}        
}

function SelectRegion(section, id_country, destination, destination2) {
	if (id_country != '') {
		InitXMLHttpRequest();
		// Load the result from the response page
		if (req) {
			req.onreadystatechange = function() {
				if (req.readyState == 4) {
					destination.innerHTML = req.responseText;
				} else {
					destination.innerHTML = "Loading data...";
				}
			}
			req.open("GET", "location.php?sec=" + section + "&sel=region&id_country=" + id_country, true);
			req.send(null);
		} else {
			destination.innerHTML = 'Browser unable to create XMLHttp Object';
		}        
	} else {
		destination.innerHTML = "Country is not selected";
	}
	destination2.innerHTML = "";
}

function SelectCity(section, id_region, destination) {
	if (id_region != '') {
		InitXMLHttpRequest();
		// Load the result from the response page
		if (req) {
			req.onreadystatechange = function() {
				if (req.readyState == 4) {
					destination.innerHTML = req.responseText;
				} else {
					destination.innerHTML = "Loading data...";
				}
			}
			req.open("GET", "location.php?sec=" + section + "&sel=city&id_region=" + id_region, true);
			req.send(null);
		} else {
			destination.innerHTML = 'Browser unable to create XMLHttp Object';
		}        
	} else {
		destination.innerHTML = "Region is not selected";
	}
}

function CheckLogin(section, login, destination) {
	if (login != '') {
		InitXMLHttpRequest();
		// Load the result from the response page
		if (req) {
			req.onreadystatechange = function() {
				if (req.readyState == 4) {
					destination.innerHTML = req.responseText;
				}
			}
			req.open("GET", "location.php?sec=" + section + "&sel=login&login=" + login, true);
			req.send(null);
		} else {
			destination.innerHTML = 'Browser unable to create XMLHttp Object';
		}        
	} else {
		destination.innerHTML = "Nick is empty";
	}
}

function ShowTab(sel, mlink) {
	destination = document.getElementById("tab_div");

	document.getElementById("menu1").className='tab_first';
	document.getElementById("menu2").className='tab';
	document.getElementById("menu3").className='tab';
	document.getElementById("menu4").className='tab';
	document.getElementById("menu5").className='tab';
	document.getElementById("menu"+sel).className='tab_active';

	document.getElementById("link1").className='link';
	document.getElementById("link2").className='link';
	document.getElementById("link3").className='link';
	document.getElementById("link4").className='link';
	document.getElementById("link5").className='link';
	document.getElementById("link"+sel).className='text';

	InitXMLHttpRequest();
	// Load the result from the response page
	if (req) {
		req.onreadystatechange = function() {
			if (req.readyState == 4) {
				destination.innerHTML = req.responseText;
			}
		}
		req.open("GET", mlink + "&act=ajax", true);
		req.send(null);
	} else {
		destination.innerHTML = 'Browser unable to create XMLHttp Object';
	}
}