pic = '';
pic_id = '';
anterior = 1;
function cambiar_pestana(id){
	document.getElementById('pestana_'+anterior).src = 'imagenes/pestanas/'+anterior+'.gif';
	document.getElementById('div_'+anterior).style.display = "none";
	anterior = id;
	document.getElementById('a_'+anterior).blur();
	document.getElementById('pestana_'+anterior).src = 'imagenes/pestanas/'+anterior+'-2.gif';
	document.getElementById('div_'+anterior).style.display = "block";
}

val = new Array(3);
for(i=0; i<3; i++)
	val[i] = new Array(2);

val[0][0] = 'imagenes/pestanas/1.gif';
val[0][1] = 'imagenes/pestanas/1-2.gif';
val[1][0] = 'imagenes/pestanas/2.gif';
val[1][1] = 'imagenes/pestanas/2-2.gif';
val[2][0] = 'imagenes/pestanas/3.gif';
val[2][1] = 'imagenes/pestanas/3-2.gif';

function ocultar_pestana(id){
	id2 = id - 1;
	if(id != anterior){
		document.getElementById('pestana_' + id).src = val[id2][0];
	}	
}
function mostrar_pestana(id) {
	id2 = id - 1;
	if(id != anterior){
		document.getElementById('pestana_'+ id).src = val[id2][1];
	}
}

function MM_swapImgRestore() { //v3.0
	document.getElementById(pic_id).src = pic;
}

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_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_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; 
   }
   pic = x.src;
   pic_id = x.id;
   x.src=a[i+2];}
}