function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);


function on(img) {
//	i = on.arguments;
	document.images[img].src = document.images[img].src.replace(/_off./,'_on.');
}
function off(img) {
	document.images[img].src = document.images[img].src.replace(/_on./,'_off.');
}
function act(img) {
	document.images[img].src = document.images[img].src.replace(/_off./,'_act.');
}
function resetimg() {
	for (im=0;im<document.images.length;im++) {
		if (document.images[im].name!="art_on" && document.images[im].name!="tec_on") {
			if (document.images[im].src && document.images[im].src.indexOf('_on.') > 0)
				document.images[im].src = document.images[im].src.replace(/_on./,'_off.');
		}

	}
}


function MostraMenu(num) {
	switch (num) {
		case 0: //nenhum
			lays('laysmentec',0,'laysmenart',0,'laytitarton',0,'laytittecon',0);
			break;
		case 1: //home
			lays('laysmentec',0,'laysmenart',0,'laytitarton',0,'laytittecon',0);
			break;
		case 2: //mirax
		case 3: //arte
			lays('laysmentec',0,'laysmenart',1,'laytitarton',1,'laytittecon',0);
			break;
		case 4: //tecnologia
			lays('laysmentec',1,'laysmenart',0,'laytitarton',0,'laytittecon',1);
			break;
		case 5: //contato
	
	}
}

function lays() {

	args = lays.arguments;
	
//	fornecer argumentos em pares:
//	args[i]=id do layer
//	args[i+1]=status

	for (i=0;i<args.length;i+=2) {
		if (obj=document.getElementById(args[i])) {
			if (args[i+1] == 1) {
				obj.style.visibility="visible";
			}
			else 
				obj.style.visibility="hidden";
		}
	
	}

}


function preloadImages() {
  var d=document; if(d.images){ if(!d.p) d.p=new Array();
    var i,j=d.p.length,a=preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.p[j]=new Image; d.p[j++].src=a[i];}}
}