function data() {
	var d=new Date();
	var monthname=new Array("Janeiro","Fevereiro","Março","Abril","Maio","Junho","Julho","Agosto","Setembro","Outubro","Novembro","Dezembro");
	document.write(d.getDate() + " de ");
	document.write(monthname[d.getMonth()] + " de ");
	document.write(d.getFullYear());
}
function colunas() {
	var layout = document.getElementById('layout').offsetHeight;
	var topo = document.getElementById('topo').offsetHeight;
	var rodape = document.getElementById('rodape').offsetHeight;
	
	var valor = (layout-topo-rodape+ "px");
		
		document.getElementById('left').style.height = valor;
		document.getElementById('middle').style.height = valor;
		document.getElementById('right').style.height = valor;
}
/*function colunas() {
	var browserName=navigator.appName; 
	
	var me = document.getElementById('left');
		var x = me.offsetHeight;
	var mc = document.getElementById('middle');
		var y = mc.offsetHeight;
	var mr = document.getElementById('right');
		var z = mr.offsetHeight;
		
	var main = document.getElementById('main');

	if (x>y) { 
		main.style.height = x + "px"; 
	} else { 
		main.style.height = y + "px"; 
	}
	
	var b = main.offsetHeight;
		me.style.height = b + "px"; 
		mc.style.height = b + "px";
		mr.style.height = b + "px"; 

	if (typeof document.body.style.maxHeight != "undefined") {
	  	mr.style.height = me.style.height = b + 20 + "px";
	}
}*/