function changeClass (id, c) {
	var element = document.getElementById(id);
	element.className = c;
}

function limpiarOtras (n) {
	var cont = 1;
	while(cont > 0){
		if (cont != n ){
			changeClass('titP' + cont, 'productoTitulo');
			changeImg('fP' + cont, 1);
		}
		cont++;
		var e = document.getElementById('titP' + cont).className;
		if(e == 'undefined'){
			cont = 0;
		}		
	}
}

function changeImg(id, a){
	var element = document.getElementById(id);
	//alert(element.src);
	if(a == 1){
		element.src="images/flechita_texto.gif";	
		element.className = "";
	}else{
		element.src="images/productos_flecha_clic.jpg";	
		element.className = "flechita";		
	}
}