function imprimir() 
{ 
  //print(document);   
  winopt ="menubar=no,scrollbars=yes,resizable=yes,";
  winopt +="marginwidth=0, marginheight=0, leftmargin=0, topmargin=0,";
  winopt +="width=650,height=450,";
  winopt +="left=100,top=100,screenLeft=100,screenTop=100";
    
    
  ventana=window.open("../herramientas/imprimir.php","Imprimir",winopt);        
  ventana.creator=self;
}