/* www.muitomaisagito.com */
function PopUp(url){
	var janela = '';
	largura = 450;
	altura = 380;
	
    if(!janela.closed && janela.location == url)
        janela.focus();
    else
        janela=window.open(url,'','toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=no,resizable=no,left='+ (screen.width / 2 - (largura / 2)) +',top='+ (screen.height / 2 - (altura / 2)) +',width='+ largura +',height='+ altura);

    if(!janela.opener)
        janela.opener = self;

    if(window.focus)
        janela.focus();

    return false;
}