function popupwindow(endereco){
window.open(endereco,"janela2","height=370,width=450,menubar=0,resizable=0,scrollbars=1,status=0,titlebar=0,toolbar=0,left=0,top=0")
}
function popupwindow2(endereco){
window.open(endereco,"janela3","height=450,width=800,menubar=0,resizable=0,scrollbars=1,status=0,titlebar=0,toolbar=0,left=0,top=0")
}