// JavaScript Document
function trocaBotaoHome() {
	var divNav = document.getElementById('navPrincipal');
	var listas = divNav.getElementsByTagName('li');
	var i;
	for (i=0;i<listas.length;i++) {
		if (i%2 == 0) {
			listas[i].style.background = "url('../imagens/botaoNavPrincipal.gif')";
		} else {
			listas[i].style.background = "url('../imagens/botaoNavPrincipalSeg.gif')";
		}
	}
}

function defineTamanhoNavPrincipal() {
	var divNav = document.getElementById('navPrincipal');
	var cont = parseInt(divNav.getElementsByTagName('li').length);
	var larguraDiv = cont * parseInt(divNav.getElementsByTagName('li')[0].clientWidth);
	divNav.style.width = larguraDiv+"px";
}
function completaTamanhoPagina() {
	var divTudo = document.getElementById('tudo');
	divTudo.style.height = window.height+"px";
}