/* main menu */
var timeout    = 500;
var closetimer = 0;
var ddmenuitem = 0;

function mainmenu_open() {  
	mainmenu_canceltimer();
	mainmenu_close();
	ddmenuitem = $(this).find('ul').css('visibility', 'visible');
}

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

function mainmenu_timer() {  
	closetimer = window.setTimeout(mainmenu_close, timeout);
}

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

$(document).ready(function() {  
	$('#main-menu > li').bind('mouseover', mainmenu_open);
	$('#main-menu > li').bind('mouseout',  mainmenu_timer)
});

document.onclick = mainmenu_close;
/* main menu */