function ver_caracteristicas()
	{
	document.getElementById("pestana_caracteristicas").style.visibility="visible";
	document.getElementById("pestana_caracteristicas").style.display="table";
	
	document.getElementById("pestana_requisitos").style.visibility="hidden";
	document.getElementById("pestana_requisitos").style.display="none";
	
	document.getElementById("pestana_en_la_caja").style.visibility="hidden";
	document.getElementById("pestana_en_la_caja").style.display="none";
	}
function ver_requisitos()
	{
	document.getElementById("pestana_caracteristicas").style.visibility="hidden";
	document.getElementById("pestana_caracteristicas").style.display="none";
	
	document.getElementById("pestana_requisitos").style.visibility="visible";
	document.getElementById("pestana_requisitos").style.display="table";
	
	document.getElementById("pestana_en_la_caja").style.visibility="hidden";
	document.getElementById("pestana_en_la_caja").style.display="none";
	}
function ver_caja()
	{
	document.getElementById("pestana_caracteristicas").style.visibility="hidden";
	document.getElementById("pestana_caracteristicas").style.display="none";
	
	document.getElementById("pestana_requisitos").style.visibility="hidden";
	document.getElementById("pestana_requisitos").style.display="none";
	
	document.getElementById("pestana_en_la_caja").style.visibility="visible";
	document.getElementById("pestana_en_la_caja").style.display="table";
	}