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

function xmlmenu_open()
{  
	xmlmenu_canceltimer();
	xmlmenu_close();
	ddmenuitem = $(this).find('ul').css('visibility', 'visible');
}

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

function xmlmenu_timer()
{  
	closetimer = window.setTimeout(xmlmenu_close, timeout);
}

function xmlmenu_canceltimer()
{  
	if(closetimer)
  {  
  	window.clearTimeout(closetimer);
    closetimer = null;
  }
}
$(document).ready(function()
{  
	$('#xmlmenu > li').bind('mouseover', xmlmenu_open)
	$('#xmlmenu > li').bind('mouseout',  xmlmenu_timer)
});

document.onclick = xmlmenu_close;