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


var setTimeoutID = 0;
function ShowSubMenu(dvSubMenu)
{
    clearTimeout(setTimeoutID);
    if(document.getElementById(dvSubMenu) && document.getElementById(dvSubMenu).style.display=="none")
            document.getElementById(dvSubMenu).style.display="block";
}

function HideSubMenu(dvSubMenu)
{
    setTimeoutID = setTimeout(delay,500);
    function delay()
    {
        if(document.getElementById(dvSubMenu) && document.getElementById(dvSubMenu).style.display=="block")
            document.getElementById(dvSubMenu).style.display="none";
    }
}