var cX = 0; var cY = 0; var rX = 0; var rY = 0;
function UpdateCursorPosition(e) { cX = e.pageX; cY = e.pageY; }
function UpdateCursorPositionDocAll(e) { cX = event.clientX; cY = event.clientY; }
if (document.all) { document.onmousemove = UpdateCursorPositionDocAll; }
else { document.onmousemove = UpdateCursorPosition; }

function ShowContent(d, menuId) {
    showDescription(menuId);
    var dd = document.getElementById(d);
    AssignPosition(dd);
    dd.style.display = "block";
    //dd.style.visible = "visible";
}
function HideContent(d) {
    if (d.length < 1) { return; }
    //document.getElementById(d).style.visible = "hidden";
    document.getElementById(d).style.display = "none";
}
function AssignPosition(d) {
    if (self.pageYOffset) {
        rX = self.pageXOffset;
        rY = self.pageYOffset;
    }
    else if (document.documentElement && document.documentElement.scrollTop) {
        rX = document.documentElement.scrollLeft;
        rY = document.documentElement.scrollTop;
    }
    else if (document.body) {
        rX = document.body.scrollLeft;
        rY = document.body.scrollTop;
    }
    if (document.all) {
        cX += rX;
        cY += rY;
    }
    d.style.left = (cX + 10) + "px";
    d.style.top = (cY + 10) + "px";
}