tooltip1 = null;
document.onmousemove = updateTooltip;

function updateTooltip(e) {
try {
x = (document.all) ? window.event.x + document.body.scrollLeft : e.pageX;
y = (document.all) ? window.event.y + document.body.scrollTop : e.pageY;
if (tooltip1 != null) {
tooltip1.style.left = (x - 100) + "px";
tooltip1.style.top = (y - 75) + "px";
}
} catch (error) { error=null; }
}

function showTooltip(id) {
try {
tooltip1 = document.getElementById(id);
tooltip1.style.display = "block"
} catch (error) { error=null; } 
}

function hideTooltip() {
try {
tooltip1.style.display = "none";
} catch (error) { error=null; } 
}