function submitOnEnter(btn, e)
{
    var key;

    if (window.event)
       key = window.event.keyCode;
    else if (e)
       key = e.which;
    else
       return true;

    // control keys
    if (key==13)
        document.getElementById(btn).click();
    return false;

}
function numbersOnly (e)
{
    var key;
    if (window.event) key = window.event.keyCode;
    else if (e) key = e.which;
    else return;
}
    
function clearOtherFields( ctrl )
{ 
    for( i in ctrl )
    {
        document.getElementById(ctrl[i].toString()).value = "";
    }
}
    
function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}