function janela(URL,w,h)
{
	LeftPosition = (screen.width) ? ((screen.width-w)/2)/2 : 0;
	TopPosition = (screen.height) ? ((screen.height-h)/2)/2 : 0;
	propriedades = 'toolbar=0,scrollbars=0,location=0,status=0,menubar=0,resizable=0,width='+w+',height='+h+',left='+LeftPosition+',top=0'
	day = new Date();
	//id = day.getTime();
	id = "carimferes";
	eval("page" + id + " = window.open(URL, '"+id+"',propriedades);");
}