function reveal(element)

{

	var menu = element.id;
	
	element.parentNode.parentNode.className = menu;


}

function revealcontent(element)

{

	var conteudo = element.className;
	
	document.getElementById("extrudados1070").className = "";
	document.getElementById("extrudados3000").className = "";
	document.getElementById("extrudados6063").className = "";
	document.getElementById("trefilados1070").className = "";
	document.getElementById("trefilados3000").className = "";
	document.getElementById("trefilados6063").className = "";
	document.getElementById(conteudo).className = "on";


}