function Is() {
	var agent = navigator.userAgent.toLowerCase();
	this.major = parseInt(navigator.appVersion);
	this.minor = parseFloat(navigator.appVersion);
	this.ns  = ((agent.indexOf('mozilla')!=-1) && ((agent.indexOf('spoofer')==-1) && (agent.indexOf('compatible') == -1)));
	this.ns2 = (this.ns && (this.major == 3));
	this.ns3 = (this.ns && (this.major == 3));
	this.ns4 = (this.ns && (this.major >= 4));
	this.ie   = (agent.indexOf("msie") != -1);
	this.ie3  = (this.ie && (this.major == 2));
	this.ie4  = (this.ie && (this.major >= 4));
	this.op3 = (agent.indexOf("opera") != -1);
}

var is = new Is();

function initMouseEvents() {
	document.onmousemove = mouseMove
	if (is.ns) document.captureEvents(Event.MOUSEMOVE)
}
function mouseMove(e) {
	 x = (is.ns)? e.pageX : event.x+document.body.scrollLeft
	 y = (is.ns)? e.pageY : event.y+document.body.scrollTop

	if ((y < 46) || (y > ymay) || (x < xmin) || (x > xmay))
	{
		if (navigator.appName=="Netscape") {
		document.layers[lyrant].visibility="hidden";
		} else {
		document.all[lyrant].style.visibility="hidden";
		}
	}
}