var k=0;
var numFondoPrevio = null;
var listaBackground=new Array();

listaBackground[k]=new Object();
listaBackground[k]["url"]="aruebackgrounds/fondoGalinhaSandalhaArue_day.jpg";
listaBackground[k++]["style"]="day";	//dusk//dawn

listaBackground[k]=new Object();
listaBackground[k]["url"]="aruebackgrounds/fondoRetiroArue_day.jpg";
listaBackground[k++]["style"]="day";

listaBackground[k]=new Object();
listaBackground[k]["url"]="aruebackgrounds/fondoCatatauArue_dawn.jpg";
listaBackground[k++]["style"]="dawn";

listaBackground[k]=new Object();
listaBackground[k]["url"]="aruebackgrounds/fondoCibelesArue_night.jpg";
listaBackground[k++]["style"]="night";


listaBackground[k]=new Object();
listaBackground[k]["url"]="aruebackgrounds/fondoMarteloArue_day.jpg";
listaBackground[k++]["style"]="day";	//dawn

/*
listaBackground[k]=new Object();
listaBackground[k]["url"]="aruebackgrounds/fondoMarteloChutaoArue.jpg";
listaBackground[k++]["style"]="day";

listaBackground[k]=new Object();
listaBackground[k]["url"]="aruebackgrounds/fondoMarteloBengativaArue.jpg";
listaBackground[k++]["style"]="day";
*/

listaBackground[k]=new Object();
listaBackground[k]["url"]="aruebackgrounds/fondoProfesoresSevillaArue2010_dusk.jpg";
listaBackground[k++]["style"]="dusk";

listaBackground[k]=new Object();
listaBackground[k]["url"]="aruebackgrounds/fondoExhibGalinhaTripieSinCabezaArue_dusk.jpg";
listaBackground[k++]["style"]="dusk";	//dawn

listaBackground[k]=new Object();
listaBackground[k]["url"]="aruebackgrounds/fondoGranViaArue_dusk.jpg";
listaBackground[k++]["style"]="dusk";	//dawn

listaBackground[k]=new Object();
listaBackground[k]["url"]="aruebackgrounds/fondoExhibiRodaArue_dusk.jpg";
listaBackground[k++]["style"]="dusk";

listaBackground[k]=new Object();
listaBackground[k]["url"]="aruebackgrounds/fondoRetiro2Arue_dawn.jpg";
listaBackground[k++]["style"]="dawn";




/*
listaBackground[k]=new Object();
listaBackground[k]["url"]="templates/rt_dimensions_j15/images/backgrounds/field-top-dawn.jpg";
listaBackground[k++]["style"]="dawn";

listaBackground[k]=new Object();
listaBackground[k]["url"]="templates/rt_dimensions_j15/images/backgrounds/field-top-day.jpg";
listaBackground[k++]["style"]="day";

listaBackground[k]=new Object();
listaBackground[k]["url"]="templates/rt_dimensions_j15/images/backgrounds/field-top-dusk.jpg";
listaBackground[k++]["style"]="dusk";

listaBackground[k]=new Object();
listaBackground[k]["url"]="templates/rt_dimensions_j15/images/backgrounds/field-top-night.jpg";
listaBackground[k++]["style"]="night";
*/

function cambiarBackground()
{
	if (document.body)
	//if (document.getElementsByTagName('body')[0])
	{
		var numeroAleatorio;
		
		if(numFondoPrevio != null)
		{
			do
			{
				numeroAleatorio = Math.floor(Math.random()*(listaBackground.length));
			}
			while(numeroAleatorio == numFondoPrevio);
		}
		else
			numeroAleatorio = Math.floor(Math.random()*(listaBackground.length));
		
		document.body.id=listaBackground[numeroAleatorio]["style"];
		document.getElementById('bg-top').style.backgroundImage="url('" + listaBackground[numeroAleatorio]["url"] + "')";
		
		numFondoPrevio = numeroAleatorio;
	}
}

//window.addEvent('load', cambiarBackground() );

window.addEvent('load', function() {
	if (document.body.id == '') {
		
		var numeroAleatorio = Math.floor(Math.random()*(listaBackground.length));
		
		document.body.id=listaBackground[numeroAleatorio]["style"];
		document.getElementById('bg-top').style.backgroundImage="url('" + listaBackground[numeroAleatorio]["url"] + "')";
		
		numFondoPrevio = numeroAleatorio;
	}
});


window.addEvent('load', function() {
	if (document.getElementById('inset')) {
		document.getElementById('inset').setAttribute("onclick", "cambiarBackground(); return false");
	}
});