String.prototype.pad = function( l, s, t ) {
	return s || ( s = " " ), ( l -= this.length ) > 0 ? ( s = new Array( Math.ceil( l / s.length )
			+ 1 ).join( s ) ).substr( 0, t = !t ? l : t == 1 ? 0 : Math.ceil( l / 2 ) )
			+ this + s.substr( 0, l - t ) : this;
};

var fnG = {
	obtieneLayer: function( id ) {
		if ( document.getElementById ) {
			return document.getElementById( id ).style;
		} else if ( document.all ) {
			return document.all[id].style;
		} else if ( document.layers ) {
			return document.layers[id];
		}
		return "";
	},

	cargaCombo: function( valorCombo, comboLlenar, nombreArreglo ) {
		var numValores;
		var j, k = 1;
		
		while ( comboLlenar.length > 1 ) {
			comboLlenar.remove( 1 );
		}
		if ( valorCombo == 0 ) {
			comboLlenar.length = 1;
			comboLlenar.options[0].value = "0";
			comboLlenar.options[0].text = "Seleccione";
			comboLlenar.selectedIndex = 0;
			return false;
		}
		eval( 'varCases = cases' + nombreArreglo + '.valueOf();' );
		eval( 'switch( valorCombo ) { ' + varCases + ' default	: 	numValores = 0; comboLlenar.selectedIndex = 0; k = 0; }' );
		comboLlenar.selectedIndex = 0;
		return true;
	},

	extraeTexto: function( tupla ) {
		return tupla.substring( tupla.indexOf('!') + 1, tupla.length )
	},
	
	extraeValor: function( tupla ) {
		return tupla.substring( 0, tupla.indexOf('!') )
	},
	
	obtenerKeyCode: function( e ) {
		return window.event ? window.event.keyCode : ( e && typeof e.which != 'undefined' ) ? e.which : ( e && typeof e.keyCode != 'undefined' ) ? e.keyCode : null;
	},
	
	obtenerTarget: function( e ) {
		return ( window.event && window.event.srcElement ) ? window.event.srcElement : ( e && e.target ) ? e.target : 0;
	},

	obtElemPorPrefijo: function( idFormulario, preFijo, tipoElem ) {
		var numElementos = idFormulario.elements.length;
		var arrayDevolver = new Array();
		for ( var i = 0; i < numElementos; i++ ) {
			elemento = idFormulario.elements[i];
			if ( tipoElem != null ) {
				switch ( elemento.type ) {
					case tipoElem:
							if ( elemento.name.indexOf( preFijo ) != -1 && elemento.name.indexOf( preFijo ) == 0 ) {
								arrayDevolver.push( elemento );
							}
							break;
				}
			} else if ( elemento.name.indexOf( preFijo ) != -1 && elemento.name.indexOf( preFijo ) == 0 ) {
				arrayDevolver.push( elemento );
			}
		}
		return arrayDevolver;
	},

	obtTagHTMLPorPrefijo: function( nombreTag, preFijo ) {
		if ( !document.getElementsByTagName || nombreTag == null ) {
			return;
		}
		var arrayDevolver = new Array();
		var todosLosTags = document.getElementsByTagName( '' + nombreTag + '' );
		for ( var i = 0; i < todosLosTags.length; i++ ) {
			var tag = todosLosTags[i];
			if ( preFijo != null ) {
				if ( ( ' ' + tag.id + ' ' ).indexOf( preFijo ) != -1 && ( ' ' + tag.id + ' ' ).indexOf( preFijo ) == 1 ) {
					arrayDevolver.push( tag );
				}
			} else {
				arrayDevolver.push( tag );
			}
		}
		return arrayDevolver;
	},

	obtElem: function( id ) {
		if ( document.getElementById ) {
			return document.getElementById( id );
		} else if ( window[id] ) {
			return window[id];
		}
		return null;
	},
	
	addEvent: function( elm, evType, fn, useCapture ) {
	  // cross-browser event handling for IE5+, NS6 and Mozilla 
	  // By Scott Andrew 
		if ( elm.addEventListener ) { 
			elm.addEventListener( evType, fn, useCapture );
			return true;
		} else if ( elm.attachEvent ) { 
			var r = elm.attachEvent( 'on' + evType, fn ); 
			return r;
		} else {
			elm['on' + evType] = fn;
		}
		return "";
	},
	
	caracteresValidos: function( e, ExpRegNoAceptados ) {
		var key = fnG.obtenerKeyCode( e );
		var caracterEntrada = String.fromCharCode( key );
		return !( caracterEntrada.match( ExpRegNoAceptados ) );
	},
	
	alerta: function( mensaje, objeto ) {
		alert( mensaje );
		if ( objeto != null ) {
			objeto.focus();
		}
		return false;
	},
	
	trim: function( s ) {
		while ( s.substring( 0, 1 ) == ' ' || s.substring( 0, 1 ) == '\t' ) {
			s = s.substring( 1, s.length );
		}
		while ( s.substring( s.length - 1, s.length ) == ' ' || s.substring( s.length - 1, s.length ) == '\t' ) {
			s = s.substring( 0, s.length - 1 );
		}
		return s;
	},
	
	borraEspacios: function( idFormulario ) {
		var elementos;
		elementos = idFormulario.elements.length;
		for ( var i = 0; i < elementos; i++ ) {
			elem = idFormulario.elements[i];
			switch ( elem.type ) {
				case "text": elem.value = fnG.trim( elem.value );
							break;
			}
		}
	},
	
	fechaMayor: function( dia1, mes1, anio1, dia2, mes2, anio2 ) {
		var fechaInicio = "";
		var fechaFin = "";
		fechaInicio = anio1 + mes1 + dia1;
		fechaFin = anio2 + mes2 + dia2;
		return ( fechaInicio > fechaFin )
	},

	llenadia: function( comboDia, mes, ano ) {
		var maximo = 31;
		var maxdia = comboDia.options[comboDia.selectedIndex].value;
		//borro el combo hijo
		for ( var i = comboDia.options.length; i > 0; i-- ) { 
			comboDia.options[i] = null;
		}
		if ( mes == '4' || mes == '6' || mes == '9' || mes == '11' ) {
			maximo = 30;
		}
		if ( mes == '2' ) {
			maximo = 28;
			var flagbiciesto = eval( ( ano % 4 == 0 ) && ( ( ano % 100 != 0 ) || ( ano % 400 == 0 ) ) );
			if ( flagbiciesto ) {
				maximo = 29;
			}
		}
		//options[0] = new Option( "dia", 0 );
		//relleno el combo hijo
		for ( var j = 0; j < maximo; j++ ) {
			var valOption = ""
			var cero = "0";
			var newVal = 0;
			newVal = j + 1;
			valOption = "" + newVal + "";
			if ( parseInt( valOption ) < 10 ) {
				valOption = cero.concat( valOption );
			}
			comboDia.options[j] = new Option( valOption, j + 1 );
		}
		if ( maxdia >= maximo ) {
			comboDia.options[maximo - 1].selected = true
		} else {
			comboDia.options[maxdia - 1].selected = true
		}
	},

	llenadiaSinAnio: function( comboDia, mes ) {
		var ano = 2000;
		var maximo = 31;
		var maxdia = comboDia.options[comboDia.selectedIndex].value;
		//borro el combo hijo
		for ( var i = comboDia.options.length; i > 0; i-- ) { 
			comboDia.options[i] = null;
		}
		if ( mes == '4' || mes == '6' || mes == '9' || mes == '11' ) {
			maximo = 30;
		}
		if ( mes == '2' ) {
			maximo = 28;
			var flagbiciesto = eval( ( ano % 4 == 0 ) && ( ( ano % 100 != 0 ) || ( ano % 400 == 0 ) ) );
			if ( flagbiciesto ) {
				maximo = 29;
			}
		}
		//options[0] = new Option( "dia", 0 );
		//relleno el combo hijo
		for ( var j = 0; j < maximo; j++ ) {
			var valOption = ""
			var cero = "0";
			var newVal = 0;
			newVal = j + 1;
			valOption = "" + newVal + "";
			if ( parseInt( valOption ) < 10 ) {
				valOption = cero.concat( valOption );
			}
			comboDia.options[j] = new Option( valOption, j + 1 );
		}
		if ( maxdia >= maximo ) {
			comboDia.options[maximo - 1].selected = true
		} else {
			comboDia.options[maxdia - 1].selected = true
		}
	},

	llenadiaParteDeCero: function( comboDia, mes, ano ) {
		var maximo = 31;
		var maxdia = comboDia.options[comboDia.selectedIndex].value;
		//borro el combo hijo
		for ( var i = comboDia.options.length; i > 0; i-- ) { 
			comboDia.options[i] = null;
		}
		if ( mes == '4' || mes == '6' || mes == '9' || mes == '11' ) {
			maximo = 30;
		}
		if ( mes == '2' ) {
			maximo = 28;
			var flagbiciesto = eval( ( ano % 4 == 0 ) && ( ( ano % 100 != 0 ) || ( ano % 400 == 0 ) ) );
			if ( flagbiciesto ) {
				maximo = 29;
			}
		}
		comboDia.options[0] = new Option( "Día", 0 );
		//relleno el combo hijo
		for ( var j = 1; j <= maximo; j++ ) {
			//options[j] = new Option( j, j );
			var valOption = ""
			var cero = "0";
			var newVal = 0;
			newVal = j;
			valOption = "" + newVal + "";
			if ( parseInt( valOption ) < 10 ) {
				valOption = cero.concat( valOption );
			}
			comboDia.options[j] = new Option( valOption, j );
		}
		if ( maxdia >= maximo ) {
			comboDia.options[maximo].selected = true
		} else {
			comboDia.options[maxdia].selected = true
		}
	},

	muestraMensaje: function( div, flag ) {
		var DHTML = ( document.getElementById || document.all || document.layers );
		if ( !DHTML ) {
			return;
		}
		var x = fnG.obtieneLayer( div );
		x.visibility = ( flag ) ? 'visible' : 'hidden'
		if ( !document.getElementById ) {
			if ( document.layers ) {
				x.left = 280 / 2;
			}
		}
	},

	obtContenido: function( URL, fn ) {
		if ( !Sarissa ) {
			alert( "No está agregada la Librería Sarissa." );
			return;
		}
		var xmlhttp = new XMLHttpRequest();
		var fecha = new Date();
		var timestamp = fecha.getTime();
		var qs = URL + '&t=' + timestamp;
		xmlhttp.open( 'GET', URL + qs, true );
		xmlhttp.onreadystatechange = function() {
			if ( xmlhttp.readyState == 4 ) {
				fn ( unescape( xmlhttp.responseText ) );
			}
		};
		xmlhttp.send( null );
	},

	esEmail: function( email ) {
		var filtro=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
		return filtro.test( email );
	},

	obtFechaMensaje: function( x ) {
		return x == 0 ? "Fecha válida"
		: x == 1 ? "Formato de fecha inválido"
		: x == 2 ? "Día no válido"
		: x == 3 ? "Mes no válido"
		: x == 4 ? "En Abril, Junio, Septiembre y Noviembre no hay día 31"
		: x == 5 ? "Febrero sólo tiene 28 días"
		: x == 6 ? "En años bisiestos, Febrero tiene 29 días": "nada =]";
	},

	esFecha: function( y, m, d ) { //v1.0
		if ( typeof y == "string" && m instanceof RegExp && d ) {
			if ( !m.test( y ) ) {
				return 1;
			}
			y = RegExp[ "$" + d.y ], m = RegExp[ "$" + d.m ], d = RegExp[ "$" + d.d ];
		}
		d = Math.abs( d ) || 0, m = Math.abs( m ) || 0, y = Math.abs( y ) || 0;
		return arguments.length != 3 ? 1 : d < 1 || d > 31 ? 2 : m < 1 || m > 12 ? 3 : /4|6|9|11/.test( m ) && d == 31 ? 4
		: m == 2 && ( d > ( ( y = !( y % 4 ) && ( y % 1e2 ) || !( y % 4e2 ) ) ? 29 : 28 ) ) ? 5 + !!y : 0;
	},

	modulo11: function( dv, rut ) {
		/* proceso */
		var suma = 0;
		var mult = 2;
	
		if ( dv == "K" ) {
			dv = "10";
		}
		for ( i = rut.length - 1; i >= 0; i-- ) {
			c = rut.charAt(i);
			suma += parseInt( c, 10 ) * mult;
			mult++;
			if ( mult > 7 ) {
				mult = 2;
			}
		}
		var dvCalculado = 11 - suma % 11;
		if ( dvCalculado == 11 ) {
			dvCalculado = 0;
		}
		return( parseInt( dv ) == dvCalculado );
	},
	
	validaRut: function( valorRut, valorDV ) {
		if ( !valorRut || !valorDV ) {
			return false;
		}
		var ElRut = valorRut.toUpperCase();
		var ElDv = valorDV.toUpperCase();
		var rut00 = "000000000";
		/* validaciones varias */
		if ( ( ElRut.length < 5 ) || ( ElRut.substring( 0, 1 ) == "0" ) || ( rut00.substring( 0, ElRut.length ) == ElRut ) 
								  || ( ElRut.length == 0 ) || ( ElDv.length == 0 ) ) {
			return false;
		}
		for ( i = 0; i < ElRut.length; i++ ) {
			c = ElRut.charAt( i );
			if ( c < "0" || c > "9" ) {
				return false;
			}
		}
		c = ElDv.charAt(0);
		if ( ( c < "0" || c > "9" ) && c != "K" ) {
			return false;
		}
		return fnG.modulo11( ElDv, ElRut );
	},

	/*
	Script Name: Javascript Cookie Script
	Author: Public Domain, with some modifications
	Script Source URI: http://techpatterns.com/downloads/javascript_cookies.php
	Version 1.0.0
	Last Update: 30 May 2004
	
	This library is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
	*/
	
	// this function gets the cookie, if it exists
	Get_Cookie: function( name ) {
		var start = document.cookie.indexOf( name + "=" );
		var len = start + name.length + 1;
		if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) {
			return null;
		}
		if ( start == -1 ) {
			return null;
		}
		var end = document.cookie.indexOf( ";", len );
		if ( end == -1 ) {
			end = document.cookie.length;
		}
		return unescape( document.cookie.substring( len, end ) );
	},
	
	/*
	only the first 2 parameters are required, the cookie name, the cookie
	value. Cookie time is in milliseconds, so the below expires will make the 
	number you pass in the Set_Cookie function call the number of days the cookie
	lasts, if you want it to be hours or minutes, just get rid of 24 and 60.
	
	Generally you don't need to worry about domain, path or secure for most applications
	so unless you need that, leave those parameters blank in the function call.
	*/
	Set_Cookie: function( name, value, expires, path, domain, secure ) {
		// set time, it's in milliseconds
		var today = new Date();
		today.setTime( today.getTime() );
		// if the expires variable is set, make the correct expires time, the
		// current script below will set it for x number of days, to make it
		// for hours, delete * 24, for minutes, delete * 60 * 24
		if ( expires ) {
			expires = expires * 1000 * 60 * 60 * 24;
		}
		//alert( 'today ' + today.toGMTString() );// this is for testing purpose only
		var expires_date = new Date( today.getTime() + (expires) );
		//alert('expires ' + expires_date.toGMTString());// this is for testing purposes only
	
		document.cookie = name + "=" + escape( value ) +
			( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + //expires.toGMTString()
			( ( path ) ? ";path=" + path : "" ) + 
			( ( domain ) ? ";domain=" + domain : "" ) +
			( ( secure ) ? ";secure" : "" );
	},
	
	// this deletes the cookie when called
	Delete_Cookie: function( name, path, domain ) {
		if ( fnG.Get_Cookie( name ) ) document.cookie = name + "=" +
				( ( path ) ? ";path=" + path : "") +
				( ( domain ) ? ";domain=" + domain : "" ) +
				";expires=Thu, 01-Jan-1970 00:00:01 GMT";
	},

	mostrar: function( queMostrar, valor ) {
		fnG.obtElem( queMostrar ).style.display = valor;
	},
	
	previsualizarImagen: function( idFormulario, campoImagen, campoDesplegar, divContenedor ) {
		var filename;
		var objImagen;
		if ( document.images ) {
			filename = idFormulario.campoImagen.value;
			objImagen = new Image();
			objImagen.src = filename;
			idFormulario.campoDesplegar.src = objImagen.src;
			fnG.mostrar( divContenedor, "inline" );
		} else {
			fnG.alerta( "Su browser no soporta pre-visualización de imágenes.", idFormulario.campoImagen );
		}
	},

	esNumero: function( numero ) {
		var expReg = /^[0-9]+$/i;
		return expReg.test( numero );
	},
	
	noInputSoloNumeros: function( e ) {
		var charCode;
		if ( navigator.appName == "Netscape" ) {
			charCode = e.which;
		} else {
			charCode = e.keyCode;
		}
		sw = 0;
		status = charCode;
		if ( ( charCode >= 48 ) && ( charCode <= 57 ) ) {
			sw = 1;
		}
		if ( ( charCode == 0 ) || ( charCode == 8 ) ) {
			sw = 1;
		}
		if ( navigator.appName == "Netscape" ) {
			if ( sw == 0 ) {
				return false;
			}
		} else {
			if ( sw == 0 ) {
				event.returnValue = false;
			}
		}
	},
	
	noInputSoloDV: function( e ) {
		var charCode;
		if ( navigator.appName == "Netscape" ) {
			charCode = e.which;
		} else {
			charCode = e.keyCode;
		}
		sw = 0;
		status = charCode;
		if ( ( charCode >= 48 ) && ( charCode <= 57 ) ) {
			sw = 1;
		}
		if ( ( charCode == 75 ) || ( charCode == 107 ) ) {
			sw = 1;
		}
		if ( ( charCode == 0 ) || ( charCode == 8 ) ) {
			sw = 1;		
		}
		if ( navigator.appName == "Netscape" ) {
			if ( sw == 0 ) {
				return false;
			}
		} else {
			if ( sw == 0 ) {
				event.returnValue = false;
			}
		}
	},
	
	textCounter: function( field, maxlimit, fnLlamar ) {
		if ( field.value.length > maxlimit ) {
			if ( fnLlamar != null ) {
				/* función que muestra una alerta o un mensaje */
				fnLlamar( "Máximo " + maxlimit + " caracteres." );
			}
			field.value = field.value.substring( 0, maxlimit );
		}
	},
	
	numeroEntero: function( valor ) {
		var expresion = new RegExp("^[0-9]+$");
		return expresion.test(valor);
	}
}