function PageLoadSpecific()
{  
    var tags = document.getElementsByTagName("body");
    tags[0].onkeydown = OnKeyDownBody;    
}

function OnKeyDownBody( evt )
{
    var control = GetEventObject(evt);
    if( control.id == "UserControl1_txtNewsletter" && control.value != "" && event.keyCode == 13 )
    {    
        document.getElementById("UserControl1_lnkSubNewsletter").click(); 
        return false;
    }
    
    return(event.keyCode != 13);
}