// JavaScript Document


function open_popup_previsao(){		
				y=window.open("","janela_previsao","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=650,height=400");
				y.moveTo((screen.width-650)/2,(screen.height-400)/2-20);  
				y.document.open();
			}