/* Función para validar la dirección de e-mail */

  function ValidarEmail(email){
    if( email.indexOf('@',0) <= 0  || email.indexOf(';',0) != -1
     || email.indexOf(' ',0) != -1 || email.indexOf('/',0) != -1
     || email.indexOf(';',0) != -1 || email.indexOf('<',0) != -1
     || email.indexOf('>',0) != -1 || email.indexOf('*',0) != -1
     || email.indexOf('|',0) != -1 || email.indexOf('`',0) != -1
     || email.indexOf('&',0) != -1 || email.indexOf('$',0) != -1
     || email.indexOf('!',0) != -1 || email.indexOf('"',0) != -1
     || email.indexOf(':',0) != -1 )
       { 
	   return false; 
	   }
    else return true;
    }
	
	function CompruebaCampo(sCampo, longuitud){
		if ( String(sCampo) != "undefined" &&  String(sCampo).length > 0 && String(sCampo).length <= parseInt(longuitud) ){
			return true;
		}else{
			return false;			
		}
	}
	
	
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_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; }
    obj.visibility=v; }
}

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_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_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

	
/*
function checkEmail(emailStr) {
   if (emailStr.length == 0)
     return true;
   var emailPat=/^(.+)@(.+)$/;
   var specialChars=\"()<>@,;:\\\".[]\";
   var validChars=\"[^s\" + specialChars + \"]\";
   var quotedUser=\"(\\\"[^\\\"]*\\\")\";
   var ipDomainPat=/^(d{1,3})[.](d{1,3})[.](d{1,3})[.](d{1,3})$/;
   var atom=validChars + \'+\';
   var word=\"(\" + atom + \"|\" + quotedUser + \")\";
   var userPat=new RegExp(\"^\" + word + \"(.\" + word + \")*$\");
   var domainPat=new RegExp(\"^\" + atom + \"(.\" + atom + \")*$\");
   var matchArray=emailStr.match(emailPat);

   if (matchArray == null)
      return false;

   var user=matchArray[1];
   var domain=matchArray[2];

   if (user.match(userPat) == null)
      return false;

   var IPArray = domain.match(ipDomainPat);
   if (IPArray != null) {
      for (var i = 1; i <= 4; i++) {
         if (IPArray[i] > 255)
         	return false;
   		}

   return true;
	 }

   var domainArray=domain.match(domainPat);
   if (domainArray == null)
      return false;

   var atomPat=new RegExp(atom,\"g\");
   var domArr=domain.match(atomPat);
   var len=domArr.length;

   if (domArr[domArr.length-1].length < 2 || domArr[domArr.length-1].length > 3)
      return false;

   if (len < 2)
      return false;

   return true;
}*/

	// FUNCIONES PARA CENTRAR UN POPUP.
	function VentanaCentradaCoordX(w) {
		return ((screen.availWidth / 2) - (w / 2));
	}
	function VentanaCentradaCoordY(h) {
		return ((screen.availHeight / 2) - (h / 2));
	}