$(document).ready(function(){ 

	var current_page_item 	= 0;
	var this_page_item 	= 0;
	
	
	function mark_li(){
		
		current_page_item = $('#navi li.main-navi.current_page_item');
		this_page_item = $(this);
		
		if( !(this_page_item.get(0) === current_page_item.get(0)) ){
			current_page_item.addClass('unmark_menu_item');
		}
		

	}
	
	function unmark_li(){
		if(current_page_item) current_page_item.removeClass('unmark_menu_item');
	}
	
	 
	$('#navi li.main-navi').bind('mouseenter', mark_li);
	$('#navi li.main-navi').bind('mouseleave',  unmark_li);

	
});