function createLine(points, id) {
    var polyOptions = {geodesic:true};
    var polyline = new GPolyline(points, "#003fff", 5, 1, polyOptions);
    polyline.id = id;
    return polyline;
}


function writeArea(points) {
    var polygon = new GPolygon(points, "#f33f00", 5, 1, "#ff0000", 0.2);
    return polygon;
}


// create marker
var SpotsInfoWindows = new Object();

function createMarker(point, category, id) {
    // Create our "tiny" marker icon
    var picto = new GIcon();
    picto.image = "./content/TERcategories/"+category+"/picto_1_4.png";
    picto.shadow = "./content/TERcategories/"+category+"/shadow_1_4.png";
    picto.iconSize = new GSize(35, 64);
    picto.shadowSize = new GSize(67, 64);
    picto.iconAnchor = new GPoint(16, 64);
    picto.infoWindowAnchor = new GPoint(16, 24);
    
    // Set up GMarkerOptions object literal
            markerOptions = { icon:picto, draggable: false };
        var marker = new GMarker(point, markerOptions);
    
    // rajouter l'id au marker
    marker.id = id;
    
    // bind info window with data in it
    $.ajax({
            url: "./get.markerinfo.xhr.php",
            type: "GET",
            data: "id="+id,
            async: true,
            success: function(html) {
                        SpotsInfoWindows[id] = html;
                        //marker.bindInfoWindowHtml(html); // "saves" info window with marker
                     }
            });
    
    // bind event handlers
    GEvent.addListener(marker, "dblclick", function() {
        // ne fais rien
    });
    
    return marker;
}


// hide/show categories
var categoryToggle = new Object();

function hideCategory(category) {
    $("#on_"+category).attr({ src: "./buttons/on_inactive.png" });
    $("#off_"+category).attr({ src: "./buttons/off_active.png" });
    for (var i=0; i<Categories[category].length; i++) {
        Categories[category][i].hide();
    }
    categoryToggle[category] = false;
    $("#category_"+category).css({background:"#ddd"});
}
function showCategory(category) {
    $("#on_"+category).attr({ src: "./buttons/on_active.png" });
    $("#off_"+category).attr({ src: "./buttons/off_inactive.png" });
    for (var i=0; i<Categories[category].length; i++) {
        Categories[category][i].show();
    }
    categoryToggle[category] = true;
    $("#category_"+category).css({background:"#ddeeff"});
}



// hide/show projects
var projectToggle = new Object();

function hideProject(projid) {
    $("#projOn_"+projid).attr({ src: "./buttons/on_inactive.png" });
    $("#projOff_"+projid).attr({ src: "./buttons/off_active.png" });
    for (var i=0; i<Projects.length; i++) {
        if (Projects[i].id == projid)
           Projects[i].hide();
    }
    projectToggle[projid] = false;
    $("#project_"+projid).css({background:"#ddd"});
}
function showProject(projid) {
    $("#projOn_"+projid).attr({ src: "./buttons/on_active.png" });
    $("#projOff_"+projid).attr({ src: "./buttons/off_inactive.png" });
    for (var i=0; i<Projects.length; i++) {
        if (Projects[i].id == projid)
           Projects[i].show();
    }
    projectToggle[projid] = true;
    $("#project_"+projid).css({background:"#ddeeff"});
}