// Funcion Ajax para cargar una página en un Div concreto
function ajaxrefresh (lote, id_div)
{	
	var request = CrearAjax(); // Llamo a la funcion que crea el Objeto Ajax

		//request.open ('GET', url, true); // asignamos los métodos open y send
     request.open("GET", "transform.php?lote="+lote+"&id_div="+id_div,true);
    request.onreadystatechange = function ()
    {
       if (request.readyState == 4) {
				if (request.status == 200 || window.location.href.indexOf ("http") == - 1) {
			    var loadpage = document.getElementById (id_div);
			    loadpage.innerHTML = request.responseText;
					}
				}
    }
   request.send (null);
}

function ajaxfotolote (descripcion, precio, lote)
{	
	var request = CrearAjax(); // Llamo a la funcion que crea el Objeto Ajax   REVISAR ESTOOOOOO

		//request.open ('GET', url, true); // asignamos los métodos open y send
     request.open("GET", "transformdes.php?descripcion="+descripcion+"&precio="+precio+"&lote="+lote, true);
    request.onreadystatechange = function ()
    {
       if (request.readyState == 4) {
				if (request.status == 200 || window.location.href.indexOf ("http") == - 1) {
			    var loadpage = document.getElementById (id_div);
			    loadpage.innerHTML = request.responseText;
					}
				}
    }
   request.send (null);
}

function ajaxpag (pag, id_div)
{	
	eliminar()
	var request = CrearAjax(); // Llamo a la funcion que crea el Objeto Ajax

		//request.open ('GET', url, true); // asignamos los métodos open y send
     request.open("GET", "listar.php?pag="+pag+"&id_div="+id_div,true);
    request.onreadystatechange = function ()
    {
       if (request.readyState == 4) {
				if (request.status == 200 || window.location.href.indexOf ("http") == - 1) {
			    var loadpage = document.getElementById (id_div);
			    loadpage.innerHTML = request.responseText;
					}
				}
    }
   request.send (null);
}


function eliminar() {
 document.getElementById('contenido').innerHTML='';
}

function mostrardiv() {
    
div = document.getElementById('fotocapa');

div.style.display = '';

}


function mostrardiv2() {

div = document.getElementById('fotocapa2');
div2 = document.getElementById('contenido_oculto');
div.style.display = '';
div2.style.display = '';
}

function cerrar() {

div = document.getElementById('fotocapa');

div.style.display='none';
  document.getElementById('fotocapa').innerHTML='';
}


function cerrar2() {

div = document.getElementById('fotocapa2');
div2 = document.getElementById('contenido_oculto');
div.style.display='none';
div2.style.display='none';
  document.getElementById('fotocapa2').innerHTML='';
    document.getElementById('contenido_oculto').innerHTML='';
}

function file_exists (url) {
    // Returns true if filename exists  
    // 
    // version: 1008.1718
    // discuss at: http://phpjs.org/functions/file_exists    // +   original by: Enrique Gonzalez
    // +      input by: Jani Hartikainen
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // %        note 1: This function uses XmlHttpRequest and cannot retrieve resource from different domain.
    // %        note 1: Synchronous so may lock up browser, mainly here for study purposes.     // *     example 1: file_exists('http://kevin.vanzonneveld.net/pj_test_supportfile_1.htm');
    // *     returns 1: '123'
    
    var req = this.window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") : new XMLHttpRequest();
    if (!req) {throw new Error('XMLHttpRequest not supported');}      
    // HEAD Results are usually shorter (faster) than GET
    req.open('HEAD', url, false);
    req.send(null);
    if (req.status == 200){        return true;
    }
    
    return false;
}

function ajax_buscar(){
	var textbus, id_div, valorcheck, lote;
	id_div = "contenido";
	textbus = document.getElementById('textobuscar').value;
	
		if (document.getElementById('bus').checked)
		{
		valorcheck = 1; // valor 1 = Busqueda por lote 
		
					
				    
				    
		}else{ valorcheck = 2; }  // valor 2 = Busqueda por Descripcion

	var request = CrearAjax(); // Llamo a la funcion que crea el Objeto Ajax

		//request.open ('GET', url, true); // asignamos los métodos open y send
     request.open("GET", "busqueda.php?textbus="+textbus+"&valorcheck="+valorcheck,true);
    request.onreadystatechange = function ()
    {
       if (request.readyState == 4) {
				if (request.status == 200 || window.location.href.indexOf ("http") == - 1) {
			    var loadpage = document.getElementById (id_div);
			    loadpage.innerHTML = request.responseText;
					}
				}
    }
   request.send (null);
}