// Borrar texto defecto input de un form
function clearText(thefield){
if (thefield.defaultValue==thefield.value)
thefield.value = ""
} 

// Cerrar ventana automaticamente
function cerrar() {
window.close();
}

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

function setWinSize(){
 var IMG = document.getElementById('imgMuestra');
 w = IMG.width + 20;
 h = IMG.height + 80;
 window.resizeTo(w,h);
}

// Click Toggle - Ampliar la nota
clickMenu = function(menu,element,cname) {
	var getEls = document.getElementById(menu).getElementsByTagName(element);

	for (var i=0; i<getEls.length; i++) {
			getEls[i].onclick=function() {
			if ((this.className.indexOf(cname))!=-1)
			{
			if ((this.className.indexOf('click'))!=-1) {
				this.className=this.className.replace("click", "");;
				}
				else {
				this.className+=" click";
				}
			}
		}
	}
}

// Valida formato fecha
function esFechaValida(fecha){
    if (fecha != undefined && fecha.value != "" ){
        if (!/^\d{2}\/\d{2}\/\d{4}$/.test(fecha.value)){
            alert("formato de fecha no válido, tiene que ser (dd/mm/aaaa)");
            return false;
        }
        var dia  =  parseInt(fecha.value.substring(0,2),10);
        var mes  =  parseInt(fecha.value.substring(3,5),10);
        var anio =  parseInt(fecha.value.substring(6),10);
 
    switch(mes){
        case 1:
        case 3:
        case 5:
        case 7:
        case 8:
        case 10:
        case 12:
            numDias=31;
            break;
        case 4: case 6: case 9: case 11:
            numDias=30;
            break;
        case 2:
            if (comprobarSiBisisesto(anio)){ numDias=29 }else{ numDias=28};
            break;
        default:
            alert("Fecha incorrecta");
            return false;
    }
        if (dia>numDias || dia==0){
            alert("Fecha incorrecta");
            return false;
        }
        return true;
    }
}


function comprobarSiBisisesto(anio){
if ( ( anio % 100 != 0) && ((anio % 4 == 0) || (anio % 400 == 0))) {
    return true;
    }
else {
    return false;
    }
}

// Confirma acción
function confirmar ( mensaje ) {
return confirm( mensaje );
} 

/* ================================================================ 
This copyright notice must be untouched at all times.

The original version of this script and the associated (x)html
is available at http://www.stunicholls.com/various/tabbed_pages.html
Copyright (c) 2005-2007 Stu Nicholls. All rights reserved.
This script and the associated (x)html may be modified in any 
way to fit your requirements.
=================================================================== */


onload = function() {
	var e, i = 0;
	while (e = document.getElementById('gallery').getElementsByTagName ('DIV') [i++]) {
		if (e.className == 'on' || e.className == 'off') {
		e.onclick = function () {
			var getEls = document.getElementsByTagName('DIV');
				for (var z=0; z<getEls.length; z++) {
				getEls[z].className=getEls[z].className.replace('show', 'hide');
				getEls[z].className=getEls[z].className.replace('on', 'off');
				}
			this.className = 'on';
			var max = this.getAttribute('title');
			document.getElementById(max).className = "show";
			}
		}
	}
}

// Devuelve texto defecto input de un form
function myBlur(element) {
     if (element.value == '') {
       element.value = element.defaultValue;
     }
   }
   
// Codifica el texto a UTF8
function utf8_encode (argString) {
    // Encodes an ISO-8859-1 string to UTF-8  
    // 
    // version: 1003.2411
    // discuss at: http://phpjs.org/functions/utf8_encode    // +   original by: Webtoolkit.info (http://www.webtoolkit.info/)
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: sowberry
    // +    tweaked by: Jack
    // +   bugfixed by: Onno Marsman    // +   improved by: Yves Sucaet
    // +   bugfixed by: Onno Marsman
    // +   bugfixed by: Ulrich
    // *     example 1: utf8_encode('Kevin van Zonneveld');
    // *     returns 1: 'Kevin van Zonneveld'    var string = (argString+''); // .replace(/\r\n/g, "\n").replace(/\r/g, "\n");
 
    var utftext = "";
    var start, end;
    var stringl = 0; 
    start = end = 0;
    stringl = string.length;
    for (var n = 0; n < stringl; n++) {
        var c1 = string.charCodeAt(n);        var enc = null;
 
        if (c1 < 128) {
            end++;
        } else if (c1 > 127 && c1 < 2048) {            enc = String.fromCharCode((c1 >> 6) | 192) + String.fromCharCode((c1 & 63) | 128);
        } else {
            enc = String.fromCharCode((c1 >> 12) | 224) + String.fromCharCode(((c1 >> 6) & 63) | 128) + String.fromCharCode((c1 & 63) | 128);
        }
        if (enc !== null) {            if (end > start) {
                utftext += string.substring(start, end);
            }
            utftext += enc;
            start = end = n+1;        }
    }
 
    if (end > start) {
        utftext += string.substring(start, string.length);    }
 
    return utftext;
}