wmtt = null;

document.onmousemove = updateWMTT

function updateWMTT(e) {
         x = (document.all) ? window.event.x + document.body.scrollLeft : e.pageX;
         y = (document.all) ? window.event.y + document.body.scrollTop  : e.pageY;
         if (wmtt != null) {
                 wmtt.style.left = (x + 20) + "px";
                 wmtt.style.top  = (y + 20) + "px";
         }
}

function showWMTT(id) {
         wmtt = document.getElementById(id);
         wmtt.style.display = "block"
}

function hideWMTT() {
         wmtt.style.display = "none";
}