$(document).ready(function () {	

$('#navigation li').hover(
	function () {
		//show its submenu
		$('ul', this).show(150);
		$('#work', this).css({'background-color': '#6B9B00'});

	}, 
	function () {
		//hide its submenu		
		$('ul', this).hide(100);
		$('#work', this).css({'background-color': ''});
	}
);

});