//Abre una ventana sin controles segun las coordenadas indicadas
function NewWindow(URL, L, T, W, H)
{
  var NewWindow;
  var Properties = "toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=no, copyhistory=no, left="+L+", top="+T+", width="+W+", height="+H+", alwaysRaised=yes"; 
  NewWindow = window.open(URL,"Imagen", Properties);
  NewWindow.focus();
}