//call with var layerW (visible width) and var layerH (entire move length) var speed (something between 1 (fast) and 100 (slow) 
var imgStarter;
var browser;
var whatLayer;

var imageMinus1=layerH_features;
var imageMinus2=layerH_competitions;
var imageMinus3=layerH_games;
var imageMinus4=layerH_text;

var imagePlus1=0;
var imagePlus2=0;
var imagePlus3=0;
var imagePlus4=0;

var version = navigator.appVersion.substring(0, 1);
if (version >=4) version = 1;
if (navigator.appName.indexOf('Netscape') != -1) browser="ns";
if (navigator.appName.indexOf('Microsoft') != -1) browser="ie";
var mac = navigator.appVersion.indexOf("Mac");
if (navigator.appVersion.indexOf("Mac") != -1) {
	var speed=1;
}

function startMove(what) {
	whatLayer = "Layer" + what;
	imgStarter=what;
}

function stopMove() {
	imgStarter=0;
}

function up() {
	window.status = "Câmara de Mediação e Arbitragem de São Paulo"
	if (imgStarter && version) {
		if (eval("imageMinus" + imgStarter) >0) {
			if (browser=="ns") {
				document.layers[whatLayer].top--;
				document.layers[whatLayer].clip.top++;
				document.layers[whatLayer].clip.bottom++;
			}
			if (browser=="ie") {
				posTop = document.all[whatLayer].style.top;
				posTopLength = (posTop.length)-2;
				posTop =posTop.substring(0,posTopLength);
				posTop--;
				document.all[whatLayer].style.top=posTop;
				clipstr = document.all[whatLayer].style.clip;
			    i = clipstr.indexOf("(");
			    cliptop = parseInt(clipstr.substring(i + 1, clipstr.length));
			    i = clipstr.indexOf(" ", i + 1); i = clipstr.indexOf(" ", i + 1);
			    clipbottom = parseInt(clipstr.substring(i + 1, clipstr.length));
				cliptop++;clipbottom++;
				document.all[whatLayer].style.clip="rect(" + cliptop + "px " + layerW + "px " + clipbottom + " 0px)";
			}
			eval("imageMinus" + imgStarter + "--");
			eval("imagePlus" + imgStarter + "++");
			setTimeout('up()',speed);

		}
	}
}

function down() {
	window.status = "Câmara de Mediação e Arbitragem de São Paulo"
	if (imgStarter && version) {
		if (eval("imagePlus" + imgStarter) >0) {
			if (browser=="ns") {
				document.layers[whatLayer].top++;
				document.layers[whatLayer].clip.top--;
				document.layers[whatLayer].clip.bottom--;
			}
			if (browser=="ie") {
				posTop = document.all[whatLayer].style.top;
				posTopLength = (posTop.length)-2;
				posTop =posTop.substring(0,posTopLength);
				posTop++;
				document.all[whatLayer].style.top=posTop;
				clipstr = document.all[whatLayer].style.clip;
			    i = clipstr.indexOf("(");
			    cliptop = parseInt(clipstr.substring(i + 1, clipstr.length));
			    i = clipstr.indexOf(" ", i + 1); i = clipstr.indexOf(" ", i + 1);
			    clipbottom = parseInt(clipstr.substring(i + 1, clipstr.length));
				cliptop--;clipbottom--;
				document.all[whatLayer].style.clip="rect(" + cliptop + "px " + layerW + "px " + clipbottom + " 0px)";		
			}
			eval("imageMinus" + imgStarter + "++");
			eval("imagePlus" + imgStarter + "--");
			setTimeout('down()',speed);
		}
	}
}