var speed = 10;

var aDOM = 0, ieDOM = 0, nsDOM = 0; var stdDOM = document.getElementById;
if (stdDOM) aDOM = 1; else {
    ieDOM = document.all; if (ieDOM) aDOM = 1; else {
        var nsDOM = ((navigator.appName.indexOf('Netscape') != -1)
&& (parseInt(navigator.appVersion) == 4)); if (nsDOM) aDOM = 1;
    } 
}
function xDOM(objectId, wS) {
    if (stdDOM) return wS ? document.getElementById(objectId).style :
document.getElementById(objectId);
    if (ieDOM) return wS ? document.all[objectId].style : document.all[objectId];
    if (nsDOM) return document.layers[objectId];
}
function objWidth(objectID) { var obj = xDOM(objectID, 0); if (obj.offsetWidth) return obj.offsetWidth; if (obj.clip) return obj.clip.width; return 0; }
function objHeight(objectID) { var obj = xDOM(objectID, 0); if (obj.offsetHeight) return obj.offsetHeight; if (obj.clip) return obj.clip.height; return 0; }
function setObjVis(objectID, vis) { var objs = xDOM(objectID, 1); objs.visibility = vis; }
function moveObjTo(objectID, x, y) { var objs = xDOM(objectID, 1); objs.left = x; objs.top = y; }
function pageWidth() { return window.innerWidth != null ? window.innerWidth : document.body != null ? document.body.clientWidth : null; }
function pageHeight() { return window.innerHeight != null ? window.innerHeight : document.body != null ? document.body.clientHeight : null; }
function posLeft() { return typeof window.pageXOffset != 'undefined' ? window.pageXOffset : document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft ? document.body.scrollLeft : 0; }
function posTop() { return typeof window.pageYOffset != 'undefined' ? window.pageYOffset : document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop ? document.body.scrollTop : 0; }
var xxx = 0; var yyy = 0; var dist = distX = distY = 0; var stepx = 2; var stepy = 0; var mn = 'smenu';
function distance(s, e) { return Math.abs(s - e) }
function direction(s, e) { return s > e ? -1 : 1 }
function rate(a, b) { return a < b ? a / b : 1 }
function start() {
    xxx = -225; yyy = 200; var eX = 0; var eY = 100; dist = distX = distance(xxx, eX); distY = distance(yyy, eY); stepx *= -direction(xxx, eX) * rate(distX, distY); stepy *= direction(yyy, eY) * rate(distY, distX); moveit();
    setObjVis(mn, 'visible');
}
function moveit() { var x = (posLeft() + xxx) + 'px'; var y = (posTop() + yyy) + 'px'; moveObjTo(mn, x, y); }
function mover() {
    if (dist > 0) { xxx += stepx; yyy += stepy; dist -= Math.abs(stepx); } moveit(); setTimeout('mover()', speed);
}
function slide() { dist = distX; stepx = -stepx; moveit(); setTimeout('mover()', speed * 2); return false; }
onload = start;
window.onscroll = moveit;