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_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; x.src=a[i+2];}
}
document.write('<div class="Boton">');
document.write('<a href="index.html" onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage(\'Inicio\',\'\',\'imgs/inicio_in.jpg\',1)" >');
if(seccion=='inicio'){
	document.write('<img src="imgs/inicio_in.jpg" name="Inicio" width="103" height="32" border="0" /></a> </div>');
}else{
	document.write('<img src="imgs/inicio_out.jpg" name="Inicio" width="103" height="32" border="0" /></a> </div>');
}

document.write('<div class="Boton">');
document.write('<a href="NatGeoBases.html" onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage(\'Bases\',\'\',\'imgs/bases_in.jpg\',1)">');
if(seccion=='bases'){
	document.write('<img src="imgs/bases_in.jpg" name="Bases" width="103" height="32" border="0" id="Bases" />');
}else{
	document.write('<img src="imgs/Bases_out.jpg" name="Bases" width="103" height="32" border="0" id="Bases" />');
}
document.write('</a>');
document.write('</div>');
document.write('<div class="Boton">');
document.write('<a href="NatGeoSube.html" onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage(\'Sube tu foto\',\'\',\'imgs/sube_in.jpg\',1)">');
if(seccion=='sube'){
	document.write('<img src="imgs/sube_in.jpg" name="Sube tu foto" width="155" height="32" border="0" id="Sube tu foto" /></a>');

}else{
	document.write('<img src="imgs/sube_out.jpg" name="Sube tu foto" width="155" height="32" border="0" id="Sube tu foto" /></a>');

}
document.write('</div>');
document.write('<div class="Boton"> ');
document.write('<a href="NatGeoMapa.html" onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage(\'Mapa\',\'\',\'imgs/mapa_in.jpg\',1)">');
if(seccion=='mapa'){
	document.write('<img src="imgs/mapa_in.jpg" name="Mapa" width="96" height="32" border="0" id="Mapa" /></a>');

}else{
	document.write('<img src="imgs/Mapa_out.jpg" name="Mapa" width="96" height="32" border="0" id="Mapa" /></a>');

}
document.write('</div>');
document.write('<div class="Boton">');
document.write('<a href="NatGeoGanadores.html" onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage(\'Ganadores\',\'\',\'imgs/ganadores_in.jpg\',1)">');
if(seccion=='ganadores'){
	document.write('<img src="imgs/ganadores_in.jpg" name="Ganadores" width="141" height="32" border="0" id="Ganadores" /></a>');

}else{
	document.write('<img src="imgs/ganadores_out.jpg" name="Ganadores" width="141" height="32" border="0" id="Ganadores" /></a>');

}
document.write('</div>');
document.write('<div class="Boton">');
document.write('<a href="NatGeoGallery.php" onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage(\'Galerķa\',\'\',\'imgs/galeria_in.jpg\',1)">');
if(seccion=='gallery'){
	document.write('<img src="imgs/galeria_in.jpg" name="Galerķa" width="116" height="32" border="0" id="Galerķa" /></a>');
}else{
	document.write('<img src="imgs/galeria_out.jpg" name="Galerķa" width="116" height="32" border="0" id="Galerķa" /></a>');
}
document.write('</div>');
document.write('<div class="Boton">');
document.write('<a href="mailto:natgeoenmarcando@hotmail.com" onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage(\'Contacto\',\'\',\'imgs/contactanos_in.jpg\',1)">');
document.write('<img src="imgs/contactanos_out.jpg" name="Contacto" width="157" height="32" border="0" id="Contacto" /></a>');
document.write(' </div>');