// JavaScript Document
var iHeight = 0;
window.onload = function() {
	var iHeight = $('principal').offsetHeight;
	var iHeight2 = $('menu_esq').offsetHeight;

	if (iHeight > iHeight2) {
	 $('menu_esq').style.height = iHeight+'px';
	 $('menu_dir').style.height = iHeight+'px';
	}
}