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];
		}
	},
	
	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;
	},
	
	cargaCombo: function( valorCombo, comboLlenar, nombreArreglo ) {
		var numValores;
		var j, k = 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('!') )
	},

	obtenerElemento: function ( id ) {
		if ( document.getElementById ) {
			return document.getElementById( id );
		}
		else if ( window[id] ) {
			return window[id];
		}
		return null;
	},
	
	obtenerElementosPorPrefijo: 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 ) 
								arrayDevolver.push( elemento );
							break;
				}
			}
			else if( elemento.name.indexOf( preFijo ) != -1 ) 
					arrayDevolver.push( elemento );
		}
		return arrayDevolver;
	},
	
	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;
		}
	},
	
	caracteresValidos: function( e, ExpRegNoAceptados ) {
		var key = fnG.obtenerKeyCode( e );
		var caracterEntrada = String.fromCharCode( key );
		return !( caracterEntrada.match( ExpRegNoAceptados ) );
	},
	
	alerta: function ( mensaje, objeto ) {
		alert( mensaje );
		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 numElementos = idFormulario.elements.length;
		for( var i = 0; i < numElementos; i++ ) {
			elemento = idFormulario.elements[i];
			switch ( elemento.type ) {
				case "text": 
				case "textarea":
				case "password":
						elemento.value = fnG.trim( elemento.value );
						break;
			}
		}
	},

	limpiarFormulario: function ( idFormulario ) {
		var numElementos = idFormulario.elements.length;
		for( var i = 0; i < numElementos; i++ ) {
			elemento = idFormulario.elements[i];
			switch ( elemento.type ) {
				case "text": 
				case "textarea":
				case "password":
						elemento.value = "";
						break;
				case "select-one":
					elemento.value = '0';
					break;
			}
		}
	},

	fechaMayor: function ( dia1, mes1, anio1, dia2, mes2, anio2 ) {
		var fechaInicio = "";
		var fechaFin = "";
		fechaInicio = anio1 + mes1.pad( 2, '0', 0 ) + dia1.pad( 2, '0', 0 );
		fechaFin = anio2 + mes2.pad( 2, '0', 0 ) + dia2.pad( 2, '0', 0 );
		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
		}
	},
	
	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;
	},

	obtenerContenido: 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.setRequestHeader("Content-Type", "text/xml; charset=iso-8859-1");
		xmlhttp.onreadystatechange = function() {
			if (xmlhttp.readyState == 4) {
				fn( unescape( xmlhttp.responseText ) );
			}
		};
		xmlhttp.send(null);
	},

	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 );
	},
	
	esEmail: function ( email ) {
		var filtro=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
		return filtro.test( email );
	},
	
	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;
	},
	
	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;
			}
		}
	},
	
	handleKeyPress: function ( e ) {
		var el;
		if ( !( el = fnG.obtenerTarget( e ) ) ) {
			return;
		}
		var ExpReg = obtenerExpReg( e );
		if ( !fnG.caracteresValidos( e, ExpReg ) ) {
			if ( window.event && window.event.returnValue ) {
				window.event.returnValue = false;
			}
			if ( e && e.preventDefault ) {
				e.preventDefault();
			}
			return false;
		}
		return true;
	}
}