$(document).ready(function(){
	$('#motifs_menu').hover(
		function()
		{
			var h = parseInt( $('#motifs_submenu_links').height() );
			$('#motifs_submenu').animate({height : h}, {queue : false, duration: 500});
		},
		function()
		{
			$('#motifs_submenu').animate({height : 0}, {queue : false, duration: 500});
		}
	);

    $('.main_nav_menu_item').hover(
		function()
		{
			var h = parseInt( $(this).find('.main_nav_submenu_links').height() );
			$(this).find('.main_nav_submenu').animate({height : h}, {queue : false, duration: 500});
		},
		function()
		{
			$(this).find('.main_nav_submenu').animate({height : 0}, {queue : false, duration: 500});
		}
	);
}
);