$(function() {		
		$( "#dialog:ui-dialog" ).dialog( "destroy" );
		
		var name = $( "#name" ),
			password = $( "#password" ),
			allFields = $( [] ).add( name ).add( password ),
			tips = $( ".validateTips" );

		function updateTips( t ) {
			tips
				.text( t )
				.addClass( "ui-state-highlight" );
			setTimeout(function() {
				tips.removeClass( "ui-state-highlight", 1500 );
			}, 500 );
		}

		function checkLength( o, n, min, max ) {
			if ( o.val().length > max || o.val().length < min ) {
				o.addClass( "ui-state-error" );
				updateTips( "la longueur " + n + " doit être entre " +
					min + " et " + max + "." );
				return false;
			} else {
				return true;
			}
		}

		function checkRegexp( o, regexp, n ) {
			if ( !( regexp.test( o.val() ) ) ) {
				o.addClass( "ui-state-error" );
				updateTips( n );
				return false;
			} else {
				return true;
			}
		}
		
		$( "#dialog-form" ).dialog({
			autoOpen: false,
			height: 300,
			width: 350,
			modal: true,
			buttons: {
				"Connexion": function() {
					var bValid = true;
					allFields.removeClass( "ui-state-error" );

					bValid = bValid && checkLength( name, "username", 3, 16 );				
					bValid = bValid && checkLength( password, "password", 5, 16 );

					bValid = bValid && checkRegexp( name, /^[a-z]([0-9a-z_])+$/i, "le nom d'utilisateur doit commencer par une lettre et de type alpha-numérique" );									
					bValid = bValid && checkRegexp( password, /^([0-9a-zA-Z])+$/, "le mot de passe doit contenir seulement des chiffres ou des alphabets" );

					if ( bValid ) {
						login();
						//$( this ).dialog( "close" );
					}
				},
				Cancel: function() {
					$( this ).dialog( "close" );
				}
			},
			close: function() {
				allFields.val( "" ).removeClass( "ui-state-error" );
			}
		});

		$( "#create-user" )
			.button()
			.click(function() {
				$( "#dialog-form" ).dialog( "open" );
			});
	});
	
	
function createXMLHttpRequest( ) {
    var request = false;
    //Tester si le navigateur supporte l'objet XMLhttpRequest (firefox...)
    if (window.XMLHttpRequest) {
        if (typeof XMLHttpRequest != 'undefined')
            //Création de l'objet XMLHttpRequest
            try {
                request = new XMLHttpRequest( );
            } catch (e) {
                request = false;
            }
    //Tester si le navigateur supporte l'objet ActiveXObject (Microsoft internet explorer...)
    } else if (window.ActiveXObject) {
        //Création de l'objet XMLHTTP
        try {
            request = new ActiveXObject('Msxml2.XMLHTTP');
        } catch(e) {
            try {
                request = new ActiveXObject('Microsoft.XMLHTTP');
            } catch (e) {
                request = false;
            }
        }
    }
    return request;
}

var request = createXMLHttpRequest( );

function login() {
if (document.getElementById('name').value!='' || document.getElementById('password').value != '')
{

$(".validateTips").text("Loading...");	

var user = encodeURI(document.getElementById('name').value);
var pass = encodeURI(document.getElementById('password').value);

params="username="+user+"&password="+pass;

request.open("POST", "login.php", true);
request.onreadystatechange = loginReply;
request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
request.send(params);
}
function loginReply() {
if(request.readyState == 4){
var response = request.responseText;
$(".validateTips").text(response);
$(".validateTips").show("very slow");
if (response.charAt(0)=='f' || response.charAt(0)=='s' || response.charAt(0)=='r')
{
$(".validateTips").text("redirection vers votre page...");
document.location=response+'.php';
}
}
}
}