// Sliding Menu Script
// copyright Stephen Chapman, 6th July 2005
// you may copy this code but please keep the copyright notice as well
var speed = 6;

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 = 'colori';

//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 = 0; 
	yyy = 15;  
	var eX = 0; var eY = 100; 
	dist = distX = xxx;
	distY = yyy;
	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);
	moveObjTo(mn,'',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;