var timeout    = 0;

var closetimer = 0;

var ddmenuitem = 0;



function mainMenuDrop_open()

{  mainMenuDrop_canceltimer();

mainMenuDrop_close();

   ddmenuitem = $(this).find('ul').css('visibility', 'visible');
   }



function mainMenuDrop_close()

{  if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');}



function mainMenuDrop_timer()

{  closetimer = window.setTimeout(mainMenuDrop_close, timeout);}



function mainMenuDrop_canceltimer()

{  if(closetimer)

   {  window.clearTimeout(closetimer);

      closetimer = null;}}



$(document).ready(function()

{  $('#mainMenuDrop > li').bind('mouseover', mainMenuDrop_open)

   $('#mainMenuDrop > li').bind('mouseout',  mainMenuDrop_timer)});



//document.onclick = buttons_close;