/**
 * @author Ing Antares Farias
 */
var identificator =1;
var banderaAccion = 0;
var xml_presentation;
function cargaPresentation(div){
	var url = 'presentation/presentation.php';
	var pars = '';
	var myAjax = new Ajax.Updater(div, url, {
		methot: 'post',
		onComplete: function(){
			//decoGreyboxLinks();
			startPresentation();
			//Nifty("div.contenido","same-height");
			//actualizaClases('inicioTab');
		},
		parameters: pars
	});
	//window.location = "index.php";
}
function cambiarDatos(info){
	identificator= info;
	var titulo_press = xml_presentation[info-1].getElementsByTagName("titulo")[0].childNodes[0].nodeValue;
	var imagen_press = xml_presentation[info-1].getElementsByTagName("imagen")[0].childNodes[0].nodeValue;
	var texto_press = xml_presentation[info-1].getElementsByTagName("texto")[0].childNodes[0].nodeValue;
	$('imagen_presentation').update("<img src='presentation/img/"+imagen_press+"' width='600' height='400'>");
	$('texto_presentation').update(texto_press);
	aclararNum("numero_presentation"+info);
}
function ciclado(){
	cambiarDatos(identificator);
	ciclo();
	if (banderaAccion == 0) {
		identificator++;
		if (identificator == 6) {
			identificator = 1;
		}
	}
		
}
function over(info){
	cambiarDatos(info);
	banderaAccion = 1;
}
function out(){
	banderaAccion = 0;
}
function ciclo(){
	var t=setTimeout("ciclado();",3000);
}
 
function startPresentation(){
	loadXML();
	cambiarDatos(identificator);
	ciclo();
	var browser=navigator.appName;
	//var b_version=navigator.appVersion;
	//var version=parseFloat(b_version);
	if(browser!="Netscape"){
		//$('texto_presentation').setStyle("top=-100;");
		//$('pantallas_presentation').setStyle("top=-50;");
		//$('texto_presentation').setStyle("top=300px;");
		//$('pantallas_presentation').setStyle("top=360px;");
		$('texto_presentation').addClassName("texto_presentation_opera");
		$('pantallas_presentation').addClassName("pantallas_presentation_opera");
		$('texto_presentation').removeClassName("texto_presentation");
		$('pantallas_presentation').removeClassName("pantallas_presentation");
		//alert("sugoi");
	}
}
function loadXML() 
{
	if (window.XMLHttpRequest)
	  {
	  xhttp=new XMLHttpRequest();
	  }
	else // Internet Explorer 5/6
	  {
	  xhttp=new ActiveXObject("Microsoft.XMLHTTP");
	  }
	xhttp.open("GET","presentation/presentation.xml",false);
	xhttp.send("");
	xmlDoc=xhttp.responseXML;
	var x=xmlDoc.getElementsByTagName("pagina");
	/*for (i=0;i<x.length;i++)
	  { 
  		x[i].getElementsByTagName("texto")[0].childNodes[0].nodeValue;
	  }*/
	 xml_presentation = x;
}
function opacarNum(infoDiv){
	$(infoDiv).style.opacity='.5';
	$(infoDiv).style.filter='alpha(opacity=50)';
	$(infoDiv).style.KhtmlOpacity='.5';
}
function aclararNum(infoDiv){
	$(infoDiv).style.opacity='1';
	$(infoDiv).style.filter='alpha(opacity=100)';
	$(infoDiv).style.KhtmlOpacity='1';
	var i;
	for(i=1;i<6;i++){
		if(i!=identificator){
			opacarNum("numero_presentation"+i);
		}
	}
}