var whitespace = " \t\n\r";

function isEmpty(s)
{
   return ((s == null) || (s.length == 0))
}

function isWhitespace (s)

{   var i;

    if (isEmpty(s)) return true;

    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);

        if (whitespace.indexOf(c) == -1) return false;
    }

    return true;
}

function IsNumeric(strString)
   //  check for valid numeric strings	
   {
   var strValidChars = "0123456789";
   var strChar;
   var blnResult = true;

   if (strString.length == 0) return false;
   for (i = 0; i < strString.length && blnResult == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
         blnResult = false;
         }
      }
   return blnResult;
   }

function dameletra(form)
{
	if (!(form.dni1.value == "") && (IsNumeric(form.dni1.value))){
		var JuegoCaracteres="TRWAGMYFPDXBNJZSQVHLCKET";
		var Posicion=  form.dni1.value % 23;
		var Letra = JuegoCaracteres.charAt(Posicion);
		form.dni2.value=Letra
	}
}

function comprobarDatos ( form )
{
		
    if (form.usuario.value == "" || isWhitespace(form.usuario.value)) {
        alert( "Por favor, escriba su nombre de usuario." );
		form.usuario.value="";
        form.usuario.focus();
        return false ;
    }
	
	if (form.password.value == "" || isWhitespace(form.password.value)){
        alert( "Por favor, escriba su contraseña." );
		form.password.value="";
	    form.password.focus();
        return false ;
    }
		
	return true ;
}

function comprobarDatos2 ( form )
{
		
    if (form.usuario.value == "" || isWhitespace(form.usuario.value)) {
        alert( "Por favor, escriba su email con que se registró." );
		form.usuario.value="";
        form.usuario.focus();
        return false ;
    }
		
	return true ;
}

function chequeaFormulario(form)
{

   if(!form.a[0].checked && !form.a[1].checked && !form.a[2].checked && !form.a[3].checked) {
	/*if(!form.a[0].checked && !form.a[1].checked && !form.a[2].checked) {*/
     alert("Debe seleccionar una respuesta para la pregunta.");
     return false;
    }
	
   return true;
}

function comprobarPostal ( form )
{
		
    if ((form.remitente.value == "") || isWhitespace(form.remitente.value)) {
        alert( "Por favor, escriba su nombre." );
        form.remitente.focus();
        return false ;
    }
	
	if ((form.dni1.value == "") || (!IsNumeric(form.dni1.value))){
        alert( "Por favor, escriba el número de su DNI." );
        form.dni1.focus();
        return false ;
    }	
	if ((form.dni2.value == "") || (IsNumeric(form.dni2.value))){
        alert( "Por favor, escriba la letra de su DNI." );
        form.dni2.focus();
        return false ;
    }
	var JuegoCaracteres="TRWAGMYFPDXBNJZSQVHLCKET";
	var Posicion=  form.dni1.value % 23;
	var Letra = JuegoCaracteres.charAt(Posicion);
	var Letrita = form.dni2.value;
	if (Letrita.toUpperCase() != Letra){
        alert( "Atención, el DNI introducido no es correcto." );
        form.dni1.focus();
        return false ;
    }	
	
	if ((form.ciudad.value == "") || isWhitespace(form.ciudad.value)) {
        alert( "Por favor, escriba la ciudad donde se encuentra." );
        form.ciudad.focus();
        return false ;
    }
	
	if ((form.asunto.value == "") || isWhitespace(form.asunto.value)) {
        alert( "Por favor, escriba el asunto." );
	    form.asunto.focus();
        return false ;
    }
	
	if ((form.mensaje.value == "") || isWhitespace(form.mensaje.value)) {
        alert( "Por favor, escriba su mensaje." );
	    form.mensaje.focus();
        return false ;
    }	
	
	return true ;
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

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_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_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_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];}
}

function MM_showHideLayers() { //v6.0
  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; }
    obj.visibility=v; }
}
function MM_goToURL() { //v3.0
  var i, args=MM_goToURL.arguments; document.MM_returnValue = false;
  for (i=0; i<(args.length-1); i+=2) eval(args[i]+".location='"+args[i+1]+"'");
}

function abreVentana(theURL,winName,features) {
	var winl = (screen.width - 450) / 2;
	var wint = (screen.height - 350) / 2;
	win = window.open(theURL,winName,features+',left='+winl+',top='+wint);
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }  
}

function showRemote(a,b,c) {
self.name = "principal";

OpenWindow = window.open(a, b, c);
}

function showRemote2() {
self.name = "principal";

var windowprops = "toolbar=0,location=0,directories=0,status=0, " +
"menubar=0,scrollbars=0,resizable=0,width=160,height=169,top=220,left=320";

OpenWindow = window.open("banner/encuesta.htm", "remote", windowprops);
}

function showRemote3() {
self.name = "principal";

var windowprops = "toolbar=0,location=0,directories=0,status=0, " +
"menubar=0,scrollbars=0,resizable=0,width=465,height=100,top=220,left=320";

OpenWindow = window.open("banner/live_medical.htm", "remote", windowprops);
}

function closeRemote() {
timer = setTimeout('window.close();', 10);
}

startList = function() {
	if (document.all&&document.getElementById) {
	navRoot = document.getElementById("nav");
	for (i=0; i<navRoot.childNodes.length; i++) {
	node = navRoot.childNodes[i];
	if (node.nodeName=="LI") {
	node.onmouseover=function() {
	this.className+=" over";
	  }
	  node.onmouseout=function() {
	  this.className=this.className.replace(" over", "");
  	 }
   }
  }
 }
}
window.onload=startList;