$(document).ready(function(){ 
	$(document).pngFix(); 
}); 

var timeout = 500;
var closetimer = 0;
var ddmenuitem = 0;
var is_home_page = false;

function gbosnav_open()
{  gbosnav_canceltimer();
   gbosnav_close();
   ddmenuitem = $(this).find('ul').css('visibility', 'visible');}

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

function gbosnav_timer()
{  closetimer = window.setTimeout(gbosnav_close, timeout);}

function gbosnav_canceltimer()
{  if(closetimer)
   {  window.clearTimeout(closetimer);
      closetimer = null;}}

$(document).ready(function()
{  
	if( !is_home_page ) {
	$('.main-nav > li').bind('mouseover', gbosnav_open)
   $('.main-nav > li').bind('mouseout',  gbosnav_timer)
}
});

document.onclick = gbosnav_close;