$(document).ready(function() {	
	var time = 0;       
	var time_end = 0;
	var id = $('.announce:last').attr('id');
	if (id != undefined)
		{
		var id = id.split('time')[1].toString();
		var max_time = id.split('_')[2];  
	}
	
	window.setInterval(function() {
		if(max_time == time) time = 0; 
		time_end = show_hide_announce(time, time_end); 
		time++; 
	}, 1000);
		
	$(".MenuMain").mouseover(function() {
		var img = $(this).find("td").find("a").attr("id");
		$("#big_img").attr({"src": img});
		$(this).css({"background": "#ffffff"});
	});
	
	$(".MenuMain").mouseout(function() {
		$("#big_img").attr({"src": $("#big_img").attr("alt")});
		$(this).css({"background": ""});
	});

});
function show_hide_announce(time, time_end) {
	var c = ($('.announce').length) - 1;
	for (i = -1; i < c; i++) {
		var id = $('.announce:gt(' + i + ')').attr('id');
		id = id.split('time')[1].toString();
		var start = id.split('_')[1];
		var end = id.split('_')[2];
		if (start == time)	{
			time_end = end;
			$(".announce").css('display', 'none');
			$("#time_" + start + "_" + time_end).css('display', 'block');
		}
	}
	return time_end;
}