/* Rotation des images */

ir_array = new Array();

ir_current = 0;
ir_previous = -1;



function ir_get(id) {
    return document.getElementById("ir_id" + id);
}
function ir_hide(id) {
    ir_get(id).style.zIndex = -2;
}
function ir_show_opacity() {
    o = ir_get(ir_current);
    ir_opacity += 0.1;
    if (ir_opacity < 1) {
        o.style.opacity = ir_opacity;
        setTimeout(ir_show_opacity, 100);
    }
    else {
        o.style.opacity = 1;
        if (ir_previous != -1)
            ir_get(ir_previous).style.display = "none";
    }
}
function ir_show(id) {
    o = ir_get(id);
    o.style.zIndex = -1;
    o.style.display = "block";
    ir_opacity = 0;
    ir_show_opacity();
}

function ir_change() {
    ir_previous = ir_current;
    if ((++ir_current) >= ir_array.length)
        ir_current = 0;

    ir_hide(ir_previous);
    ir_show(ir_current);
}

ir_array.push("Opto-réduite.JPG");
ir_array.push("ac.jpg");
ir_array.push("soleil.jpg");
ir_array.push("iogs.png");
ir_array.push("fibre_optique.jpg");


document.write("<div class=\"img_centre\">");

for (i = 0; i < ir_array.length; ++i) {
    document.writeln("<img class=\"img_gauche_anim\" style=\"display:none;\" id=\"ir_id" + i + "\" src=\"Accueil/_img/" + ir_array[i] + "\" />");
}

document.writeln("</div>");

ir_show(0);

setInterval(ir_change, 8000);