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&&id.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function cambiarImagen() { //v3.0
  var i,j=0,x,a=cambiarImagen.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];
		}
}
/* Funciones PopUp */
function getPage(thePage,wt,ht){
        leftPos= (screen.width-wt)/2
        topPos = (screen.height-ht)/2
        newWin1 = window.open(thePage,'aWin','toolbars=no, resizeable=no,scrollbars=no,left='+leftPos+',top='+topPos+',width='+wt+',height='+ht)
}
function toggle(target){
	obj=(document.old) ? document.old[target] : document.getElementById(target);
		obj.style.display=(obj.style.display=='none') ?'inline' : 'none';
}
/* Funciones Validar Form */
function validar(formulario)
{
  if (formulario.nombre.value.length == 0 )
  {
    alert("Falta completar el campo nombre");
    return (false);
  }

  if (formulario.demail.value.length == 0 )
  {
    alert("Falta completar el campo e-mail");
    return (false);
  }

   if (formulario.asunto.value.length == 0 )
  {
    alert("Falta completar el campo asunto");
    return (false);
  }

   if (formulario.comentario.value.length == 0 )
  {
    alert("Falta completar el campo comentario");
    return (false);
  }
  
  return (true);
}