BM_Y_DIFF = 220;
BM_Y_TMP_DIFF = 0;
BM_Y_LIMIT = 0; // valeur à changer (voir aussi calque)
BM_SPEED = 20;
BM_DECALAGE = 0; // valeur à changer (placement vertical)
BM_LAYER = "drag_remote";
BM_OBJ = document.getElementById(BM_LAYER);

function bodyMovinInit() {
if (BM_OBJ != null) {
bodyMovin();
}
}

function bodyMovin() {
if (document.all) {
BM_Y_DIFF = document.body.scrollTop + BM_DECALAGE;
} else {
BM_Y_DIFF = window.pageYOffset + BM_DECALAGE;
}

if (BM_Y_DIFF < BM_Y_LIMIT) {
BM_Y_DIFF = BM_Y_LIMIT;
} else {
BM_Y_DIFF += BM_SPEED;
}

if (BM_Y_DIFF != BM_Y_TMP_DIFF) {
BM_Y_DIFF = (.1 * (BM_Y_DIFF - BM_Y_TMP_DIFF)) + BM_Y_TMP_DIFF;
BM_OBJ.style.top = BM_Y_DIFF + "px";
}

BM_Y_TMP_DIFF = BM_Y_DIFF;
setTimeout('bodyMovin()', 10);
}

if (isNavigatorOk()) {
bodyMovinInit();
}