//Abre nueva ventana pop up
function openPopUp(page, target, height, width) {
  DWN = window.open(page, target, "height="+height+",width="+width+",scrollbars=no,menubar=no,resizable=no");
  br = navigator.appName;
  Ver = parseInt(navigator.appVersion);
    if (br == "Netscape" && Ver >=3 || br == "Microsoft Internet Explorer" && Ver >=4 ) {
      DWN.resizeTo(width,height);
      DWN.focus();
    }
}