// Función para mostrar cosas ocultas.
function display (objeto) {
	if (document.getElementById(objeto).style.display == '') {
		document.getElementById(objeto).style.display = 'none';
		changeOpac(0, objeto);
	}
	else {
		document.getElementById(objeto).style.display = '';
		changeOpac(100, objeto);
	}
}

function opacity (id, opacStart, opacEnd, millisec) {
	var speed = Math.round (millisec / 100);
	var timer = 0;
	
	if (opacStart > opacEnd) {
		for (i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ", '" + id + "')", (timer * speed));
			timer++;
		}
	}
	else if (opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++) {
			setTimeout("changeOpac(" + i + ", '" + id + "')", (timer * speed));
			timer++;
		}
	}
}

function changeOpac (opacity, id) {
	var object = document.getElementById(id).style;
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
} 

function refresh(lang)
{
	var sURL = unescape(window.location.href); 
	
	if (sURL.indexOf("?",-1) >= 0)
		window.location.replace(sURL + "&lang=" + lang);
	else
		window.location.replace(sURL + "?lang=" + lang);
}