
<!--
function checkEmail(correo) {
         if (!correo) return true;
         var a = correo.indexOf("@");
         var p = correo.lastIndexOf(".");
         var l = correo.length;
         if (a<1 || a>l-5 || a>p-2 || p<l-5 || p>l-3) return false;
         var especial = true;
         for (var i=a+1;i<l;i++) {
              var c=correo.charAt(i).toLowerCase();
              if ((c>='0' && c<='9') || (c>='a' && c<='z')) especial=false;
              else if (c=='-' || c=='.'){
                   if (especial) return false;
                   especial = true;
              }
              else return false;
         }
              if (especial) return false;
              return true;
}
function campoObligatorio(campo) {
  if (!eval(campo+".value")) {
    alert("Este campo es obligatorio");
    eval(campo+".focus()");
    return false;
  }
  return true;
}
function checkNum(dato,lon) {
                 var l = eval(dato+".value.length");                 
				 if (l<lon) {
						alert("No está introduciendo un número de teléfono válido.");
						eval(dato+".focus()");
						return false;
				 }
				 var vale=true;
				 for (var i=0;i<l;i++) {
                      var c= eval(dato+".value.charAt(i)");
                      if (c>=0 && c<=9) {}
                      else vale = false;
				 }
				 if (vale) return true
				 else {
					alert("Este campo es numérico.");
					eval(dato+".value=\"\"");
					eval(dato+".focus()");
					return false;
				 }
}
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 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];}
}
//-->
