var contents = new Array();
contents[0] = "enlaceChat";
contents[1] = "chat";

var showed = new Array();
showed[0]=1;
showed[1]=0;

var activetab = 0;
var MAX_ID_TAB = 99;
function muestra(idTab){
	activetab = idTab;
	if (idTab < MAX_ID_TAB) {
		for(i=0; i<contents.length; i++){
			if(i==activetab) {
				// No hacer nada
			} else {
				if(showed[i] == 1){
					var item = document.getElementById(contents[i]);
					new Effect.Opacity(item, {queue:'end', duration:0.5, from:1.0, to:0.0});
					new Effect.BlindUp(item, {queue:'end', duration:0.4});
					// Estan ocultos
					showed[i] = 0;
				}
			}
		}

		if(idTab==activetab && showed[idTab]==0){
			var item2 = document.getElementById(contents[idTab]);
			new Effect.BlindDown(item2, {queue:'end', duration:0.5});
			new Effect.Opacity(item2, {queue:'end', duration:0.3, from:0.0, to:1.0});
			// Se muestra
			showed[idTab]=1;
		}
	} else {
		//alert("mostrando todo!");
		// Mostramos todos los elementos
		for(i=0; i<contents.length; i++){
			if(showed[i]==0){
				var item2 = document.getElementById(contents[i]);
				new Effect.BlindDown(item2, {queue:'end', duration:0.4});
				delayVar = i*0.7;
				new Effect.Opacity(item2, {duration:0.4, from:0.0, to:1.0, delay:delayVar});
				// Se muestra
				showed[i]=1;
			}
		}
	}
}

/*

function cambiaEstado( idElemento ){
	if (document.getElementById(idElemento).style.display == '') {
		document.getElementById(idElemento).style.display = 'none';
	} else if (document.getElementById(idElemento).style.display == 'inline-block') {
		document.getElementById(idElemento).style.display = 'none';
	} else if (document.getElementById(idElemento).style.display == 'block') {
		document.getElementById(idElemento).style.display = 'none';
	} else {
		document.getElementById(idElemento).style.display = 'block';
	}	
}*/