var imgDir = "/images/";


/*
// preload images
function doPreload() {
    var img01 = new image();
        img01.src = imgDir + "fleche_trans_on.gif";
    var img02 = new image();
        img02.src = imgDir + "fleche_trans_off.gif";
    var img1 = new image();
        img1.src = imgDir + "menu_fleche_on.gif";
    var img2 = new image();
        img2.src = imgDir + "menu_fleche_off.gif";
    var img3 = new image();
        img3.src = imgDir + "top_ro_on.gif";
    var img4 = new image();
        img4.src = imgDir + "top_ro_off.gif";
    var img5 = new image();
        img5.src = imgDir + "top_mtl_on.gif";
    var img6 = new image();
        img6.src = imgDir + "top_mtl_off.gif";
    var img7 = new image();
        img7.src = imgDir + "top_contacts_on.gif";
    var img8 = new image();
        img8.src = imgDir + "top_contacts_off.gif";
}

*/

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

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




function On2(imgName) { 

    if (document.images && document[imgName]) {

       imgFile = imgDir + "menu_fleche_on.gif";

       document[imgName].src = imgFile; 

    }

} 



function Off2(imgName,imgPrefix) {

    if (document.images && document[imgName]) { 

       imgFile = imgDir + "menu_fleche_off.gif";

       document[imgName].src = imgFile; 

    }

}



function On3(imgName) { 

    if (document.images && document[imgName]) {

       imgFile = imgDir + "fleche_trans_on.gif";

       document[imgName].src = imgFile; 

    }

} 



function Off3(imgName,imgPrefix) {

    if (document.images && document[imgName]) { 

       imgFile = imgDir + "fleche_trans_off.gif";

       document[imgName].src = imgFile; 

    }

}