// JavaScript Document
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function expandir(item, nombreimagen,src_abierto,title_abierto,src_cerrado,title_cerrado)
{
	var d = document.getElementById(item);
	var imagen = document.getElementById(nombreimagen);
	if (d!=null)
	{
		if (d.style.display == '')
		{
			d.style.display = 'none';
			imagen.src = src_cerrado;
			imagen.title = title_abierto;
		}
		else
		{
			d.style.display = '';
			imagen.src = src_abierto;
			imagen.title = title_cerrado;
		}
	}
}

function expandir2(item)
{
	var d = document.getElementById(item);
	if (d!=null)
	{
		if (d.style.display == '')
		{
			d.style.display = 'none';
		}
		else
		{
			d.style.display = '';
		}
	}
}

function HideAll(nivel) 
{
	var targetElement;
	var aDivs = document.body.getElementsByTagName("DIV");
	
	for (var i = 0; i < aDivs.length; i++) 
	{
		targetElement = aDivs[i];
		if (targetElement.className == nivel)
			targetElement.style.display = 'none';
	}
}

function cronograma(fecha)
{
var a = document.getElementById('1977');
var imagena = document.getElementById('imgA')
var b = document.getElementById('1989');
var imagenb = document.getElementById('imgB')
var c = document.getElementById('2000');
var imagenc = document.getElementById('imgC')

if (fecha == 1){
a.style.display = 'block';
b.style.display = 'none';
c.style.display = 'none';
imagena.src ='images/fecha1A.jpg'
imagenb.src ='images/fecha2.jpg'
imagenc.src ='images/fecha3.jpg'
} 
if (fecha == 2){
a.style.display = 'none';
b.style.display = 'block';
c.style.display = 'none';
imagena.src ='images/fecha1.jpg'
imagenb.src ='images/fecha2A.jpg'
imagenc.src ='images/fecha3.jpg'
} 
if (fecha == 3){
a.style.display = 'none';
b.style.display = 'none';
c.style.display = 'block';
imagena.src ='images/fecha1.jpg'
imagenb.src ='images/fecha2.jpg'
imagenc.src ='images/fecha3A.jpg'
}
}