// insert JavaScript source code here
function doonkeypress(event, buttonname) {
  if (window.event && window.event.keyCode == 13) {
    buttonname = buttonname.replace(/_/gi, "$");
    __doPostBack(buttonname,"");
    return false;
  }
  else {
    if (event && event.which == 13) {
      buttonname = buttonname.replace(/_/gi, "$");    
      __doPostBack(buttonname,"");
      return false;
    }
    else {
      return true;
    }
  }
}