function BUSCAR_POR_ID(id){
	var obj = document.getElementById(id);
	return obj;
}

function EsIE(){//Es internet explorer
	return window.navigator.appName.indexOf("Microsoft")>=0;
}
function muestraObjeto(obj){
	str="";
	for(x in obj){
		str+=x+"="+obj[x]+"\r\n";
	}
	alert(str);
}
function addOnClickEvent(id,funcion) {
  obj=BUSCAR_POR_ID(id);
  var oldonclick = obj.onclick;
  if (typeof obj.onclick != 'function') {
    obj.onclick = funcion;
  } else {
    obj.onclick = function() {
      oldonclick();
      funcion();
    }
  }
}
function addOnSubmitEvent(id,funcion) {
  obj=BUSCAR_POR_ID(id);
  var oldonsubmit = obj.onsubmit;
  if (typeof obj.onsubmit != 'function') {
   obj.onsubmit = funcion;
  } else {
    obj.onsubmit = function() {
      oldonsubmit();
      funcion();
    }
  }
}
function addOnChangeEvent(id,funcion) {
	obj=BUSCAR_POR_ID(id);
	var oldonchange = obj.onchange;
	if (typeof obj.onchange != 'function') {
		obj.onchange = funcion;
	} else {
		obj.onchange = function() {
			oldonchange();
			funcion();
		}
	}
}
function renderContent(xml,obj){
	var basura=xml.responseText.split("4qU1_3n_14_P14y4");
	var arr=basura[1].split("Cu4nD0_C4L1EnT4_E1_50L");
	var i=0;
	var content;
	var len=arr.length-1;//por que al final tenemos uno vac�o.
//	for (i=0;i<len;i=i+1){
//		alert (i+ "." + len + "-" + arr[i])
//	}
	for (i=0;i<len;i=i+2){
		if (arr[i] && arr[i+1]){
			content=BUSCAR_POR_ID(arr[i]);
//			alert(content);
			if(content.innerHTML){
				content.innerHTML = arr[i+1];
//				alert(content.innerHTML);
			}
			else if(content.value)	content.value = arr[i+1];
		}
		else if(arr[i] && i==len-1){
//			alert('entre');
			try{
				eval(arr[i]);
			}catch(ex){alert(ex.description?ex.description:ex)}
		}
//		alert(i + "." + arr.length);
	}
//	addAjaxHandlers();
}

function updateSyncFlag(variable,value) {
	if (obj) {
		if (obj.value) {
			obj.value = value;
		}
	}
}

function sendForm(id,hideProcessing){
	if (!hideProcessing){
		procesando();
	}
	BUSCAR_POR_ID(id).submit();
}

/**
 *  Elimina los espacios iniciales y finales de una cadena
 */
function strTrim(str) {
	str = "" + str;
/*	for (i = 0; i < str.length; ) {
		if (str.charAt(i) == " ")
			str = str.substring(i + 1, str.length);
		else
			break;
	}
	for (i = str.length - 1; i >= 0; i = str.length - 1) {
		if (str.charAt(i) == " ")
			str = str.substring(0, i);
		else
			break;
	}
	return str;*/
	var whitespace = ' \n\r\t\f\x0b\xa0\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u2028\u2029\u3000';
	for (var i = 0; i < str.length; i++) {
		if (whitespace.indexOf(str.charAt(i)) === -1) {
			str = str.substring(i);
			break;
		}
	}
	for (i = str.length - 1; i >= 0; i--) {
		if (whitespace.indexOf(str.charAt(i)) === -1) {
			str = str.substring(0, i + 1);
			break;
		}
	}
	return whitespace.indexOf(str.charAt(0)) === -1 ? str : '';
}

/**
 *  Valida que una cadena tenga un formato de dirección de correo válido
 */
function validateEmail(str) {
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (filter.test(str))
		return true;
	else
		return false;
}

/**
 *  Indica si una cuenta de correo es de la plataforma Live (Hotmail, MSN, Passport, Live, etc)
 */
function isLiveMailAccount(str) {
	var filter = /\@((hotmail)|(live)|(msn)|(passport))\./i;
	if (filter.test(str))
		return true;
	else
		return false;
}

/*params:
	_div: div to be "shown" (display set to block)
	_msg: Message to be displayed using innerHTML */
function showErrorMessage(_div, _msg) {
	divErr = BUSCAR_POR_ID(_div);
	divErr.innerHTML = _msg;
	divErr.style.display = "block";
}


function validateFloat(str) {
	var filter  = /^[0-9]*(\.[0-9]{0,2})?$/;
	if (filter.test(str))
		return true;
	else
		return false;
}

function validateInfiniteFloat(str) {
	var filter  = /^[0-9]*(\.[0-9]*)?$/;
	if (filter.test(str))
		return true;
	else
		return false;
}

function validateInteger(str) {
	var filter  = /^\d+$/;
	if (filter.test(str))
		if (parseInt(str,10) >= 0)
			return true;
		else
			return false;
	else
		return false;
}

function validateVarName(str,allowSpaces) {
	var filter = /^([0-9a-zA-Z_])+$/;
	if (allowSpaces)
		filter = /^([0-9a-zA-Z_ ])+$/;
	
	if (filter.test(str))
		return true;
	else
		return false;
}

function validateAlphaNumeric(str) {
	var filter = /^([0-9a-zA-Z])+$/;
	if (filter.test(str))
		return true;
	else
		return false;
}

function objectToArray(obj_) {
	var arr_ = new Array();
	for (x_ in obj_) {
		arr_[x_] = obj_[x_];
	}
	return arr_;
}

function habilitar() {
	if (arguments.length > 1) {
		var val = arguments[0];
		for (i_hab = 1; i_hab < arguments.length; i_hab++) {
			_zone = BUSCAR_POR_ID(arguments[i_hab]);
			if (_zone) {
				_zone.disabled = !val;
			} else {
				//alert("No se encontró: <"+arguments[i_hab]+">");
			}
		}
	}
}

function setDisplay() {
	if (arguments.length > 1) {
		var _display = arguments[0];
		for (i_sh = 1; i_sh < arguments.length; i_sh++) {
			_zone = BUSCAR_POR_ID(arguments[i_sh]);
			if (_zone && _zone.style) {
				try {
					_zone.style.display = _display;
				} catch (err) {}
			} else {
				//alert("No se encontró: <"+arguments[i_hab]+">");
			}
		}
	}	
}

function htmlspecialchars(string, quote_style) {
	// http://kevin.vanzonneveld.net
	// +   original by: Mirek Slugen
	// +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
	// *     example 1: htmlspecialchars("<a href='test'>Test</a>", 'ENT_QUOTES');
	// *     returns 1: '&lt;a href=&#039;test&#039;&gt;Test&lt;/a&gt'
	
	string = string.toString();
	
	// Always encode
	string = string.replace(/&/g, '&amp;');
	string = string.replace(/</g, '&lt;');
	string = string.replace(/>/g, '&gt;');
	
	// Encode depending on quote_style
	if (quote_style == 'ENT_QUOTES') {
	    string = string.replace(/"/g, '&quot;');
	    string = string.replace(/\'/g, '&#039;');
	} else if (quote_style != 'ENT_NOQUOTES') {
	    // All other cases (ENT_COMPAT, default, but not ENT_NOQUOTES)
	    string = string.replace(/"/g, '&quot;');
	}
	return string;
}

function nl2br( str ) {
	// http://kevin.vanzonneveld.net
	// +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
	// +   improved by: Philip Peterson
	// *     example 1: nl2br('Kevin\nvan\nZonneveld');
	// *     returns 1: 'Kevin<br/>\nvan<br/>\nZonneveld'
	
	return str.replace(/([^>])\n/g, '$1<br />\n');
}

// X-Browser isArray(), including Safari
function isArray(obj) {
	if (typeof obj != "undefined")
		return obj.constructor == Array;
	else
		return false;
}

function string_in_array(needle, haystack, sensistive) {
	var found = false, sensitive = !!sensistive;
	
	for (key in haystack) {
		var hay = null, needle_ = null;
		if (sensitive) {
			hay = haystack[key];
			needle_ = needle;
		} else {
			hay = haystack[key].toUpperCase();
			needle_ = needle.toUpperCase();
		}
		if (hay == needle_) {
			found = true;
			break;
		}
	}
	return found;
}

function in_array(needle, haystack, strict) {
    // http://kevin.vanzonneveld.net
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // *     example 1: in_array('van', ['Kevin', 'van', 'Zonneveld']);
    // *     returns 1: true
 
    var found = false, key, strict = !!strict;
 
    for (key in haystack) {
        if ((strict && haystack[key] === needle) || (!strict && haystack[key] == needle)) {
            found = true;
            break;
        }
    }
 
    return found;
}

function round_number(number,dec_places){
	//(c) Copyright 2008, Russell Walker, Netshine Software Limited. www.netshinesoftware.com
	var new_number='';var i=0;number=number.toString();dec_places=dec_places*1;dec_point_pos=number.lastIndexOf(".");if(dec_point_pos==0){number="0"+number;dec_point_pos=1}if(dec_point_pos==-1||dec_point_pos==number.length-1){if(dec_places>0){new_number=number+".";for(i=0;i<dec_places;i++){new_number+="0"}return new_number}else{return number}}var existing_places=(number.length-1)-dec_point_pos;if(existing_places==dec_places){return number}if(existing_places<dec_places){new_number=number;for(i=existing_places;i<dec_places;i++){new_number+="0"}return new_number}var end_pos=(dec_point_pos*1)+dec_places;var round_up=false;if((number.charAt(end_pos+1)*1)>4){round_up=true}var digit_array=new Array();for(i=0;i<=end_pos;i++){digit_array[i]=number.charAt(i)}var stop=false;for(i=digit_array.length;i>dec_point_pos;i--){if(digit_array[i]=="."){stop=true;continue}if(round_up){digit_array[i]++;if(digit_array[i]<10){break}}else{break}if(stop){break}}for(i=0;i<=end_pos;i++){if(digit_array[i]=="."||digit_array[i]<10){new_number+=digit_array[i]}else{new_number+="0"}}if(dec_places==0){new_number=new_number.replace(".","")}return new_number
}

function addLoadEvent(func_) {
	var oldOnLoad = window.onload;
	if (typeof window.onload != "function") {
		window.onload = func_;
	} else {
		window.onload = function() {
			if (oldOnLoad) {
				oldOnLoad();
			}
			func_();
		}
	}
}

function changeText(id,text){
    var element=document.getElementById(id);
    if (element){
        while (element.firstChild){
            element.removeChild(element.firstChild);
        }
        var txtElement=document.createTextNode(text);
        element.appendChild(txtElement);
    }
}

function show_or_hide(objectId) {
	if (objectId) {
		var objectElement = BUSCAR_POR_ID(objectId);
		if (objectElement) {
			if (typeof objectElement["style"] !== "undefined") {
				if (objectElement.style.display == "none") {
					objectElement.style.display = "";
				} else {
					objectElement.style.display = "none";
				}
			}
		}
	}
}
var dateFormat = function () {
	var	token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloSZ]|"[^"]*"|'[^']*'/g,
		timezone = /\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b/g,
		timezoneClip = /[^-+\dA-Z]/g,
		pad = function (val, len) {
			val = String(val);
			len = len || 2;
			while (val.length < len) val = "0" + val;
			return val;
		};

	// Regexes and supporting functions are cached through closure
	return function (date, mask, utc) {
		var dF = dateFormat;

		// You can't provide utc if you skip other args (use the "UTC:" mask prefix)
		if (arguments.length == 1 && Object.prototype.toString.call(date) == "[object String]" && !/\d/.test(date)) {
			mask = date;
			date = undefined;
		}

		// Passing date through Date applies Date.parse, if necessary
		date = date ? new Date(date) : new Date;
		if (isNaN(date)) throw SyntaxError("invalid date");

		mask = String(dF.masks[mask] || mask || dF.masks["default"]);

		// Allow setting the utc argument via the mask
		if (mask.slice(0, 4) == "UTC:") {
			mask = mask.slice(4);
			utc = true;
		}

		var	_ = utc ? "getUTC" : "get",
			d = date[_ + "Date"](),
			D = date[_ + "Day"](),
			m = date[_ + "Month"](),
			y = date[_ + "FullYear"](),
			H = date[_ + "Hours"](),
			M = date[_ + "Minutes"](),
			s = date[_ + "Seconds"](),
			L = date[_ + "Milliseconds"](),
			o = utc ? 0 : date.getTimezoneOffset(),
			flags = {
				d:    d,
				dd:   pad(d),
				ddd:  dF.i18n.dayNames[D],
				dddd: dF.i18n.dayNames[D + 7],
				m:    m + 1,
				mm:   pad(m + 1),
				mmm:  dF.i18n.monthNames[m],
				mmmm: dF.i18n.monthNames[m + 12],
				yy:   String(y).slice(2),
				yyyy: y,
				h:    H % 12 || 12,
				hh:   pad(H % 12 || 12),
				H:    H,
				HH:   pad(H),
				M:    M,
				MM:   pad(M),
				s:    s,
				ss:   pad(s),
				l:    pad(L, 3),
				L:    pad(L > 99 ? Math.round(L / 10) : L),
				t:    H < 12 ? "a"  : "p",
				tt:   H < 12 ? "am" : "pm",
				T:    H < 12 ? "A"  : "P",
				TT:   H < 12 ? "AM" : "PM",
				Z:    utc ? "UTC" : (String(date).match(timezone) || [""]).pop().replace(timezoneClip, ""),
				o:    (o > 0 ? "-" : "+") + pad(Math.floor(Math.abs(o) / 60) * 100 + Math.abs(o) % 60, 4),
				S:    ["th", "st", "nd", "rd"][d % 10 > 3 ? 0 : (d % 100 - d % 10 != 10) * d % 10]
			};

		return mask.replace(token, function ($0) {
			return $0 in flags ? flags[$0] : $0.slice(1, $0.length - 1);
		});
	};
}();

// Some common format strings
dateFormat.masks = {
	"default":      "ddd mmm dd yyyy HH:MM:ss",
	shortDate:      "m/d/yy",
	mediumDate:     "mmm d, yyyy",
	longDate:       "mmmm d, yyyy",
	fullDate:       "dddd, mmmm d, yyyy",
	shortTime:      "h:MM TT",
	mediumTime:     "h:MM:ss TT",
	longTime:       "h:MM:ss TT Z",
	isoDate:        "yyyy-mm-dd",
	isoTime:        "HH:MM:ss",
	isoDateTime:    "yyyy-mm-dd'T'HH:MM:ss",
	isoUtcDateTime: "UTC:yyyy-mm-dd'T'HH:MM:ss'Z'"
};

// Internationalization strings
dateFormat.i18n = {
	dayNames: [
		"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
		"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
	],
	monthNames: [
		"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
		"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
	]
};

// For convenience...
Date.prototype.format = function (mask, utc) {
	return dateFormat(this, mask, utc);
};

function muestra_oculta(id){
		if (document.getElementById(id)){ 
			var el = document.getElementById(id); 
			el.style.display = (el.style.display == 'none') ? 'block' : 'none'; 
		}			
	}