function enviar(){
	var capa = document.getElementById('capaEnvio');
	capa.style.display='inline';
	capa.style.top=(window.screen.width-100)/2+'px';
	capa.style.left=(window.screen.width-150)/2+'px';

	
}


function enviaroff(){
document.getElementById('capaEnvio').style.display='none'
}