function changeVisibility(div_id) {
		if (document.getElementById(div_id).style.display == 'none') 
			document.getElementById(div_id).style.display = 'block';
		else 
			document.getElementById(div_id).style.display = 'none';
	}

	function showButton(i, div_id) {
	    
		if (i != 0) document.getElementById(div_id).style.display = 'block';
		else document.getElementById(div_id).style.display = 'none';
	}

    $(document).ready(function ()  {
            /* $('.top_menu ul:last-child li ul' ).css({width:'240px',backgroundColor:'#e7eff6;'});*/
            jQuery('.top_menu ul li:last-child ul a').hover(function () {jQuery(this).css({backgroundColor:'#e7eff6', width:'200px'})},
            function() {jQuery(this).css({backgroundColor:'#fff', width:'200px'})})
        }
    )