function clickButton(event, strID)
{
    var pButton = document.getElementById(strID);
    if (event && event.which)
    {
        if (event.which == 13)
        {
            pButton.click();
            return false;
        }
    }
    else if (window.event && window.event.keyCode)
    {
        if (window.event.keyCode == 13)
        {
            window.event.returnValue = false;
            window.event.cancel = true;
            pButton.click();
            return false;
        }
    }
}