function muestra_vt(){
	document.getElementById('mostrar_vt').style.display = "none"
	document.getElementById('ocultar_vt').style.display = "block";
}
function oculta_vt(){
	document.getElementById('ocultar_vt').style.display = "none";
	document.getElementById('mostrar_vt').style.display = "block";
}


function muestra_green(){
	document.getElementById('mostrar_green').style.display = "none";
	document.getElementById('ocultar_green').style.display = "block";
}
function oculta_green(){
	document.getElementById('ocultar_green').style.display = "none";
	document.getElementById('mostrar_green').style.display = "block";
}


function muestra_carreer(){
	document.getElementById('mostrar_carreer').style.display = "none";
	document.getElementById('ocultar_carreer').style.display = "block";
}
function oculta_carreer(){
	document.getElementById('ocultar_carreer').style.display = "none";
	document.getElementById('mostrar_carreer').style.display = "block";
}