var ROOT_HTTP = 'http://www.osan.com.br/';
var ROOT_HTTP_ADMIN = 'http://www.osan.com.br/admin/';

function $$(id) {
	return document.getElementById(id);
}

function limpaSelect(select) {
	while(select.hasChildNodes()) {
		select.removeChild(select.firstChild);
	}
}

function addSelect(select, value, label) {
	var option = document.createElement('option');
	option.appendChild(document.createTextNode(label));
	option.setAttribute('value', value);
	select.appendChild(option);
}

function getFirstChild(element) {
	var e = element.firstChild;
	while(e.nodeType != 1) {
		e = e.nextSibling;
	}
	return e;
}

function voltar() {
	history.back();
}