function UserLogin(mapi) {
	this.mapi = mapi;

	this.userid = -1;

	this.cbobj = null;
	this.cbmeth = null;

  var imageThis = this;

	this.initialize = initialize;
	function initialize() {
		this.node = document.createElement('div');
		this.node.id = 'login';
		this.node.style.position = "absolute";
		this.node.style.display = "none";
		this.node.style.top = '65px';		
    this.node.style.left = '310px';
    
		this.node.innerHTML = '<div class="close" id="userloginclose"><span>close</span></div><form method="post" action="" id="userloginform"><fieldset><ol><li><label>E-mail:</label><input type="text" id="userloginname" /></li><li><label>Heslo:</label><input type="password" id="userloginpass" /></li><li><label>&nbsp;</label><input type="submit" name="userloginsubmit" value="Přihlásit" class="loginsubmit" /></li></ol><p><a href="http://www.kamennimuzici.cz/muj-profil/registrace/" target="_blank"><span>Registrace</span>&raquo;</a><span>|</span><a href="http://www.kamennimuzici.cz/muj-profil/obnova-hesla/" target="_blank"><span>Zapomenuté heslo</span>&raquo;</a></p></fieldset></form>';
		
	  this.mapi.elmap.appendChild(this.node);
		
		this.nodeclose = document.getElementById('userloginclose');
		this.nodeform = document.getElementById('userloginform');
		this.nodename = document.getElementById('userloginname');
		this.nodepass = document.getElementById('userloginpass');
		
    
		google.maps.event.addDomListener(this.nodeform, "submit", function(e) {imageThis.onLoginClick.call(imageThis, e);});            //PJ
		google.maps.event.addDomListener(this.nodeclose, "click", function(e) {imageThis.closeLoginDialog.call(imageThis, e);});        //PJ
	}

	this.setCallBack = setCallBack;
	function setCallBack (obj, meth) {
		this.cbobj = obj;
		this.cbmeth = meth;
	}
	
	this.doCallBack = doCallBack;
	function doCallBack(data) {
		if ((this.cbobj) && (this.cbmeth)) {
			var tcbojb = this.cbobj;
			var tcbmeth = this.cbmeth;
			this.cbobj = null;
			this.cbmeth = null;
			tcbmeth.call(tcbojb, data);
		}
	}
	
	this.isLoggedIn = isLoggedIn;
	function isLoggedIn(obj, meth) {
		this.setCallBack(obj, meth);
		
		addCallback(callbacktype.isloggedinsuccess, this, this.foundIsLoggedIn);
		addCallback(callbacktype.isloggedincomplete, this, this.completeIsLoggedIn);
		addCallback(callbacktype.isloggedinerror, this, this.errorIsLoggedIn);
		
		var url = 'isloggedin.php';
		jQuery.ajax({cache:false, error:function() { runCallback(callbacktype.isloggedinerror, ''); }, success:function(data) { runCallback(callbacktype.isloggedinsuccess, data); }, complete:function() { runCallback(callbacktype.isloggedincomplete, ''); }, url:url, type:'get'});
	}
	
	this.foundIsLoggedIn = foundIsLoggedIn;
	function foundIsLoggedIn(data) {
		try {
			if (data.getElementsByTagName("isloggedin")[0].lastChild.nodeValue != 1) {
				this.doCallBack(false);
			} else {
				this.userid = data.getElementsByTagName("userid")[0].lastChild.nodeValue
				this.doCallBack(true);
			}
		} catch (e) {
			this.doCallBack(false);
		}
	}
	
	this.errorIsLoggedIn = errorIsLoggedIn;
	function errorIsLoggedIn() {
		this.doCallBack(false);
	}
	
	this.completeIsLoggedIn = completeIsLoggedIn;
	function completeIsLoggedIn() {
	}
	
	this.openLoginDialog = openLoginDialog;
	function openLoginDialog(caption) {
		if (caption != null) {
			alert(caption);
		}
		google.maps.event.clearInstanceListeners(this.nodeform);
		google.maps.event.addDomListener(this.nodeform, "submit", function(e) { imageThis.onLoginClick.call(imageThis, e);});     //PJ
		this.nodename.value = '';
		this.nodepass.value = '';
		this.node.style.display = 'block';
	}
	
	this.closeLoginDialog = closeLoginDialog;
	function closeLoginDialog() {
		this.node.style.display = 'none';
		google.maps.event.clearInstanceListeners(this.nodeform);                           //PJ
		google.maps.event.addDomListener(this.nodeform, "submit", cancelAction);           //PJ
	}
	
	this.onLoginClick = onLoginClick;
	function onLoginClick(e) {
		this.login(this.nodename.value, this.nodepass.value);
		
		try {
			if (e && e.preventDefault) e.preventDefault();
		} catch(e) {
    
		}

		return false;
	}

	this.login = login;
	function login(name, pass) {
		addCallback(callbacktype.loginsuccess, this, this.foundLogin);
		addCallback(callbacktype.logincomplete, this, this.completeLogin);
		addCallback(callbacktype.loginerror, this, this.errorLogin);
		
		var params = {user:this.nodename.value, pass:this.nodepass.value};
		
		var url = 'login.php';
		jQuery.ajax({cache:false, data:params, error:function() { runCallback(callbacktype.loginerror, ''); }, success:function(data) { runCallback(callbacktype.loginsuccess, data); }, complete:function() { runCallback(callbacktype.logincomplete, ''); }, url:url, type:'post'});
	}
	
	this.foundLogin = foundLogin;
	function foundLogin(data) {
		try {
			if (data.getElementsByTagName("isloggedin")[0].lastChild.nodeValue != 1) {
				this.errorLogin();
			} else {
				this.userid = data.getElementsByTagName("userid")[0].lastChild.nodeValue
				this.closeLoginDialog();
				alert('Přihlášení bylo úspěšné.');
			}
		} catch (e) {
			this.errorLogin();
		}
	}
	
	this.errorLogin = errorLogin;
	function errorLogin() {
		alert('Přihlášení nebylo úspěšné.');
		this.nodename.value = '';
		this.nodepass.value = '';
	}
	
	this.completeLogin = completeLogin;
	function completeLogin() {
	}
}
userLogin = null;