var imgDir = "../images/rollover/";
var menuImgDir = "../images/sm/";

// preload des images
function loadImg(src) {
  var img = new Image();
  img.src = src;
}
/*
loadImg(imgDir + 'bullet_off.gif');
loadImg(imgDir + 'bullet_on.gif');
loadImg(imgDir + 'accueil.gif');
loadImg(imgDir + 'carte_site.gif');
loadImg(imgDir + 'bottin.gif');
loadImg(imgDir + 'english.gif');*/

function bulletOn(imgName) { 
    if (document.images && document[imgName]) {
       document[imgName].src = imgDir + "bullet_on.gif";
    }
} 

function bulletOff(imgName) { 
    if (document.images && document[imgName]) {
       document[imgName].src = imgDir + "bullet_off.gif";
    }
}

function On(imgName) {
    if (document.images && document[imgName]) {
       document[imgName].src = imgDir + imgName + "_on.gif";
    }
}

function Off(imgName) {
    if (document.images && document[imgName]) {
       document[imgName].src = imgDir + imgName + "_off.gif";
    }
}

function mOn(imgName) {
    if (document.images && document[imgName]) {
       document[imgName].src = menuImgDir + imgName + "_on.gif";
    }
}

function mOff(imgName) {
    if (document.images && document[imgName]) {
       document[imgName].src = menuImgDir + imgName + "_off.gif";
    }
}