JavaScript / DHTML mouse events conflict (?) in IE(6)

I'm taking two JavaScript / DHTML scripts and trying to integrate two into one (this and this). More specially, I'm trying to display the former inside the latter one. It kind of works. I say kind of because, when the cursor goes out of an object created using the former script, IE(6) kind of shakes(?) the entire screen (inside the browser) a little bit; this doesn't happen in Firefox. I'm guessing that there is a JavaScript / DHTML mouse events conflict (?) in IE(6), but I don't know exactly what.

The former (DOM Panels III) uses the following script:

/* ======================================================================================
                              ===== DOM Panels III =====
        script by Gerard Ferrandez - ge1doot - April 22, 2007
        Evolved from Phil Richard's Panels II: http://www.mgifos.demon.co.uk/panels2.htm
        http://www.dhteumeuleu.com
   ====================================================================================== */

var xm = 0;
var ym = 0;

document.onmousemove = function(e){
	if (window.event) e=window.event;
	xm = e.clientX;
	ym = e.clientY;
}

var panel = {
	speed : .006,
	t : 0,
	O : [],
	over : false,
	
	run : function() {
		panel.t += panel.speed;
		for (var i = 0, o; o = panel.O[i]; i++)
			o.anim(i + panel.t);
	},
	
	init : function(){
		for (var i = 0, o; o = document.images[i]; i++){
			if (o.className.indexOf('panel') >= 0) {
				if(o.parentNode.href != undefined) {
					var div = document.createElement("a");
					div.href = o.parentNode.href;
				} else {
					var div = document.createElement("div");
				}
				div.className = 'panel';
				var img = document.createElement("img");
				img.src = o.src;
				img.className = 'imgPanel';
				o.parentNode.replaceChild(div,o);
				div.appendChild(img);
				div.ims = img.style;
				div.iw = img.width;
				div.ih = img.height;
				div.cx = -div.iw / 2;
				div.cy = -div.ih / 2;
				div.anim = function(t) {
					nw = this.offsetWidth;
					nh = this.offsetHeight;
					if (panel.over == this){
						for (var nx = 0, ny = 0, o = this; o != null; o = o.offsetParent) nx += o.offsetLeft, ny += o.offsetTop;
						var x = Math.max(-this.iw + nw, Math.min(0, (-(xm - nx) * (this.iw - nw)) / nw));
						var y = Math.max(-this.ih + nh, Math.min(0, (-(ym - ny) * (this.ih - nh)) / nh));
						if (Math.abs(xm-nx-nw * .5) > nw || Math.abs(ym-ny-nh * .5) > nw ) panel.over = false;
					} else {
						var mx = (this.iw - nw) * .5;
						var my = (this.ih - nh) * .5;
						var x = -mx * (1 + Math.cos(t * 1.2));
						var y = -my * (1 + Math.sin(t));
					}
					this.cx += (x - this.cx) * .1;
					this.cy += (y - this.cy) * .1;
					this.ims.left = Math.round(this.cx) + 'px';
					this.ims.top  = Math.round(this.cy) + 'px';
				}
				
				div.onmouseover = function()
				{
					panel.over = this;
				}
				this.O.push(div);
			}
		}
		setInterval(panel.run, 32);
	}
}

   
function startIt() {
	panel.init();
}

Code (markup):

And the latter (3D parallax navigator) uses the following script:

// ==================================================
//        ===== 3D parallax navigator ====
// script written by Gerard Ferrandez - January 2007
// http://www.dhteumeuleu.com
// ==================================================

var prx = {
	cx  : 0,
	cy  : 0,
	X   : 0,
	Y   : 0,
	CX  : 0,
	CY  : 0,
	FO  : 6, // focal
	RS  : .05, // speed
	RC  : 1,
	/* ==== mouse move event ==== */
	mousemove : function (e) {
		if (window.event) e = window.event;
		prx.xm = (e.x || e.clientX) - prx.nx + (prx.nw * .5);
		prx.ym = (e.y || e.clientY) - prx.ny + (prx.nh * .5);
	},
	/* ==== window resize event ==== */
	resize : function () {
		prx.nx = pxLeft(prx.scr);
		prx.ny = pxTop(prx.scr);
		prx.nw = prx.scr.offsetWidth;
		prx.nh = prx.scr.offsetHeight;
	},
	/* ==== main loop ==== */
	run : function () {
		/* ==== mouse soften ==== */
		prx.cx += (prx.xm - prx.cx) * (prx.RS * 2 * prx.RC);
		prx.cy += (prx.ym - prx.cy) * (prx.RS * 2 * prx.RC);
		/* ==== goto soften ==== */
		prx.CX += (prx.X - prx.CX) * (prx.RS * prx.RC);
		prx.CY += (prx.Y - prx.CY) * (prx.RS * prx.RC);
		/* ==== prx move ==== */
		for (var i = 0; i < prx.N; i++) {
			var o = prx.spa[i];
			o.style.left = px(o.m + prx.nw * .5 + (o.X - prx.cx * .5 - prx.CX) * o.d);
			o.style.top  = px(o.m + prx.nh * .5 + (o.Y - prx.cy * .5 - prx.CY) * o.d);
		}
		setTimeout(prx.run, 16);
	},
	/* ==== init script ==== */
	init : function (container) {
		this.scr = id(container);
		this.ref = {};
		this.spa = [];
		var k = 0;
		var r = this.scr.childNodes;
		for (var i = 0, n = r.length; i < n; i++) {
			/* ==== for each group ==== */
			var o = r[i];
			if (o.id) {
				/* ==== save coordinates ==== */
				var X = o.offsetLeft;
				var Y = o.offsetTop;
				this.ref[o.id] = {};
				this.ref[o.id].X = X;
				this.ref[o.id].Y = Y;
				this.ref[o.id].W = o.offsetWidth;
				this.ref[o.id].H = o.offsetHeight;
				o.style.position = 'static';
				var c = o.getElementsByTagName('*');
				for (var j = 0, m = c.length; j < m; j++) {
					/* ==== for each parallax object [class="prx"] ==== */
					if (c[j].className.indexOf('prx') >= 0) {
						var s = this.spa[k] = c[j];
						/* ==== zIndex = parallax level ==== */
						s.Z = s.style.zIndex;
						s.d = Math.min(prx.FO, prx.FO / (prx.FO + 1 - s.Z));
						/* ==== x,y coordinates - group + local ==== */
						s.X = X + s.offsetLeft;
						s.Y = Y + s.offsetTop;
						/* ==== zoom factor (% sizes only) ==== */
						s.W = s.offsetWidth * ((!s.style.width || s.style.width.indexOf('px') > 0) ? 1 : s.d);
						s.H = s.offsetHeight * ((!s.style.height || s.style.width.indexOf('px') > 0) ? 1 : s.d);
						s.style.width  = px(s.W);
						s.style.height = px(s.H);
						/* ==== buttons/links ==== */
						if(s.onclick) {
							s.style.cursor = 'pointer';
							s.style.zIndex = 100;
							s.onmouseover  = function() {
								this.m = 2;
								prx.RC = .5;
							}
							s.onmouseout   = function() {
								this.m = 0;
								prx.RC = 1;
							}
						}
						/* ==== navigation functions ==== */
						s.goto = function (o, ret) {
							prx.RC = 1;
							if (!ret) id(o).O = this.oid;
							id(o).style.visibility = 'visible';
							prx.X = prx.ref[o].X - .5 * (prx.nw - prx.ref[o].W);
							prx.Y = prx.ref[o].Y - .5 * (prx.nh - prx.ref[o].H);
						}
						s.ret = function () {
							this.goto(this.p.O, true);
						}
						s.hide = function () {
							setTimeout('id("' + this.oid + '").style.visibility = "hidden";', 500);
						}
						s.oid = o.id;
						s.p = o;
						s.m = 0;
						k++;
					}
				}			
			}
		}
		this.N = this.spa.length;
		/* ==== resize & mouse events ==== */
		addEvent(window, 'resize', this.resize);
		addEvent(window.document, 'mousemove', this.mousemove);
		/* ==== start ==== */
		this.resize();
		this.xm = this.nw;
		this.ym = this.nh;
		this.scr.style.visibility = 'visible';
		this.run();
	}
}

function startPage() {
	/* ==== init ==== */
	setTimeout("prx.init('screen')", 500);
} 

Code (markup):

What could be causing this problem ...??? Also how can I solve this problem? I'd like to solve this problem itself ideally, but applying a workaround is ok, too, for the time being.

I'd greatly appreciate any help ...

Thanks in advance.