var esIE6 = (
        window.external &&
        typeof window.XMLHttpRequest == "undefined"
    );

    var cargando = false;

    this.historyListener = function(historyHash) {
        if (!cargando){
            cargando = true;
            if (historyHash == ''){
                cargando = false;
                location.href='index.php';
			}else{
				linkAjax2(historyHash,$('capaAjax'));
            }
        }
    };
    // subscribe to unFocus.History
	unFocus.History.addEventListener('historyChange', this.historyListener);

    function botonVolver(){
        if(!esIE6){
            window.history.back();
        }
    }

	var progressBar = new Class({
	 	initialize: function(){
			this.destino = $('cuerpo');
			var tam = this.destino.getSize();
			this.MyBarra=new Element('div',{
				'id':'barra',
				'styles':{
					'width': tam.x,
					'height':tam.y,
					'background': 'url(./templates/cadeci/img/home/carga.gif) center no-repeat #D6E4ED',
					'position':'absolute',
					'opacity': 0
				}
			});
		},
		mostrar: function(){
			$$('body').adopt(this.MyBarra);
			var pos = this.destino.getPosition();
			this.MyBarra.setStyle('z-index','99');
			this.MyBarra.setStyles({
				top: pos.y,
				left: pos.x,
				opacity: 0.6
			});
		},
		ocultar: function(){
			this.MyBarra.setStyle('opacity',0);
			this.MyBarra.destroy();
		}
	})

    function linkAjax(link, destino,nohistorial) {

               if((!nohistorial) && (!esIE6)){
			unFocus.History.addHistory(link);
               }else{
                 linkAjax2(link, destino);
              }
    }

   	function linkAjax2(link, destino){

		    var barra = new progressBar();
		    barra.mostrar();

                    new Request.HTML({
			url:link,
			update:destino,
			useWaiter: true,
			waiterOptions: {
				fxOptions: {duration: 500}
			},
			evalScripts: true,
			onSuccess: function (responseTree, responseElements, responseHTML, responseJavaScript){
				//  pageTracker._trackPageview(link);
				//var scroller = new Fx.Scroll(document.body);
				//scroller.scrollIntoView($('capaAjax'));
				cargando = false;
			},
			onComplete: function(xml){	
				$('barra').setStyle('opacity',0);
				$('barra').destroy();
			}
		}).post();
    }

	function FormAjax(formulario,destino) {
		new Request.HTML({
			url:formulario.action,
			update:destino,
			useWaiter: true,
			waiterOptions: {
				fxOptions: {duration: 500}
			},
			evalScripts: true,
			onSuccess: function (responseTree, responseElements, responseHTML, responseJavaScript){
				/*barra.ocultar();
				barra = null;*/
			}
		}).post(formulario);
		/*
		formulario.send({
			update: destino,
			evalScripts: false,
			onComplete: function(xml) {
				//alert(xml);
				//	$('barraPrecarga').setStyle('display','none');
				//	$('capaAjax').setStyle('display','block');
				//destino.removeClass('ajax-loading');
				//pageTracker._trackPageview(form.action );
				this.evalScripts();
				//barra.ocultar();
				//barra = null;
			}
		});
        */
		return false;
    }

	function abrirImagenes(destino){
        Mediabox.open('index.php?option=com_media&view=images&tmpl=component&origen='+destino, 'Seleccione una imagen - luego CLOSE para cerrar', 'mediabox[1000 430]')
    }		
	function dialogoModal(link,vuelta,texto,alto,ancho){
        Mediabox.open(link+'&vuelta='+vuelta, texto, 'mediabox['+alto +' ' +ancho +']');
    }