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 abrir(pagina,tamano){
window.open(pagina,'Foto_Ampliada',tamano);
}

function abrir_ventana(pagina,titulo,tamano){
ventana=window.open(pagina,titulo,tamano);
ventana.focus();
}

function cerrar2(url) {
window.opener.location = url;
window.close()
}


function op2(d) {
window.opener.parent.contenido.location=d;
window.parent.close()
}

/* capa dinámica para las cabeceras */
function mOvr(src,clrOver) {
if(!src.contains(event.fromElement)){
 src.style.cursor = 'hand';
 src.bgColor = clrOver;
}
 }
 function mOut(src,clrIn) {
if (!src.contains(event.toElement)) {
 src.style.cursor = 'default';
 src.bgColor = clrIn;
}
 }
/* capa dinámica para las cabeceras */

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) { //v3.0
  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); 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];}
}

function MM_showHideLayers() { //v3.0
var i,p,v,obj,args=MM_showHideLayers.arguments;
for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
if ((navigator.appVersion.charAt(0)>=4 && (navigator.appVersion).indexOf("MSIE") != -1)) {
	pp = document.all[args[0]];
	obj.filter= 'blendTrans(duration=0.5)';
	pp.filters.blendTrans.apply();
	obj.visibility=v;
	pp.filters.blendTrans.play();
}else { obj.visibility=v }
}}

// Función que comprueba que el mail sea correcto
function emailok(cad)
{
  cad = Trim(cad);
  var car;
  var arroba = 0;
  var punto = 0;
  longitud = cad.length;
  for (var i=0;i<longitud;i++)
  {
    car = cad.charAt(i);
    if (car==' ') return false;
    if (!(IsAlpha(car) || car=='@' || car=='.' || car=='_' || car=='-' || (car>='0' && car<='9'))) return false;
    if (car=='@')
      if (arroba>0)
        return false;
      else
	if (i==0)
	  return false;
	else
	  arroba=i;
    else
      if (car=='.')
        if (i==0)
	  return false;
	else
	  punto=i;
  }
  return (arroba>0 && punto>0 && arroba<punto && punto>arroba+1 && car!='.');
}

function Trim(cad)
{
  var aux="";
  var i,lg = cad.length;
  for (;lg>0 && cad.charAt(lg-1)<=' ';lg--);
  for (i=0;i<lg && cad.charAt(i)<=' ';i++);
  for (;i<lg;i++) aux = aux + cad.charAt(i);
  return aux;
}

function IsAlpha(car)
{
  car = car.toUpperCase();
  esp = " -áéíóúäëïöüÄËÏÖÜÁÉÍÓÚñÑ";
  return  (car>='A' && car<='Z') || esp.indexOf(car)!=-1;
}

// Función que comprueba que un dato sea numerico
function es_numerico(str) {
	for(j=0; j<str.length; j++) {
		if(str.charAt(j)<'0' ||str.charAt(j)>'9') {
			return false;
		}
	}
	return true;
}

// Funcion para validar fechas
function cuantosDias(mes, anyo)
{
	var cuantosDias = 31;
    if (mes == '4' || mes == '6' || mes == '9' || mes == '11')
    	cuantosDias = 30;
        if (mes == '2' && (anyo/4) != Math.floor(anyo/4))
      		cuantosDias = 28;
        if (mes == '2' && (anyo/4) == Math.floor(anyo/4))
      		cuantosDias = 29;
    return cuantosDias;
}

//minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12);
	var pos1=dtStr.indexOf(dtCh);
	var pos2=dtStr.indexOf(dtCh,pos1+1);
	var strDay=dtStr.substring(0,pos1);
	var strMonth=dtStr.substring(pos1+1,pos2);
	var strYear=dtStr.substring(pos2+1);
	strYr=strYear;
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1);
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1);
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1);
	}
	month=parseInt(strMonth);
	day=parseInt(strDay);
	year=parseInt(strYr);
	if (pos1==-1 || pos2==-1){
		//alert("The date format should be : dd/mm/yyyy");
		return false;
	}
	if (strMonth.length<1 || month<1 || month>12){
		//alert("Please enter a valid month");
		return false;
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		//alert("Please enter a valid day");
		return false;
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		//alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear);
		return false;
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		//alert("Please enter a valid date");
		return false;
	}
return true
}
function isValidTime(timeStr) 
{
// Time validation function courtesty of 
// Sandeep V. Tamhankar (stamhankar@hotmail.com) -->

// Checks if time is in HH:MM:SS AM/PM format.
// The seconds and AM/PM are optional.

/*var timePat = '/[0-9]/[0-9]/:/[0-9]/[0-9]';

'var matchArray = timeStr.match(timePat);
'if (matchArray == null) {
'alert("Time is not in a valid format.");
'return false;
}*/

if (timeStr.length != 5) 
{
	alert("Time is not in a valid format.");
	return false;
}	
if (isNaN(timeStr.substr(0,2))) 
{
	alert("Time is not in a valid format.");
	return false;
}	
if (timeStr.substr(2,1)!=":") 
{
	alert("Time is not in a valid format.");
	return false;
}	
if (isNaN(timeStr.substr(3,2)) ) 
{
	alert("Time is not in a valid format.");
	return false;
}	
hour = timeStr.substr(0,2);
minute = timeStr.substr(3,2);
if (hour < 0  || hour > 23) {
alert("Hour must be between 1 and 12.");
return false;
}
if (minute < 0 || minute > 59) {
alert ("Minute must be between 0 and 59.");
return false;
}
return true;
}