function popup(url,largura,altura,scrollbar){
	var janela=window.open(url, 'teste', 'toolbar=0,scrollbars='+scrollbar+',location=0,statusbar=0,menubar=0,resizable=0,width='+largura+',height='+altura+',left = '+((screen.width/2)-largura)+',top = '+((screen.height/2)-altura));
}
function resize(url,largura,altura){
	var janela=window.open(url, 'teste', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width='+largura+',height='+altura+',left = '+((screen.width/2)-largura)+',top = '+((screen.height/2)-altura));
	janela.resizeTo(largura,altura);	
}