// JavaScript Document
function SelecionaImagem(atual, source)
                    {
					document.getElementById(atual).src = source
                    }
					
function mostrar_contato(){
	if (document.getElementById("contato").style.display == "block") {
		document.getElementById("contato").style.display = "none";
	} else {
		document.getElementById("contato").style.display = "block";
	}
	
}