// JavaScript set control's enter button event
function clickButton(e, buttonid) {
  var elemBut = document.getElementById(buttonid);
  if (typeof elemBut == 'object') {
    if (navigator.appName.indexOf("Netscape") > (-1)) {
      if (e.keyCode == 13) {
        elemBut.click();
        return false;
      }
    }
    if (navigator.appName.indexOf("Microsoft Internet Explorer") > (-1)) {
      if (e.keyCode == 13) {
        elemBut.click();
        return false;
      }
    }
  }
}