/*
Скрипт открытия/закрытия списка TOP 10 на главной странице 
Грипинский Сергей 
09 октября 2008 
ICQ 224-799-719
kagami-sorano@mail.ru 
*/
var max_height ;
var step; 
var time_id ;
var bar = document.getElementById('topten');
var current_height = 0;
var toggle_button_text;
var toggle_button;
var opened_button_text = "<img src='/image/top_open.gif'>";
var closed_button_text = "<img src='/image/top_closed.gif'>";
var top_ten_HTML = "";
var useIEfix = false;

function hide_top_bar( prefered ) 
{
	max_height = bar.clientHeight; 
	if (max_height < 1)
	{
		max_height = prefered;
	}
	step = max_height * 0.1;
	top_ten_HTML = bar.innerHTML;
	toggle_button = document.getElementById('toptogglebutton');
	toggle_button_text = toggle_button.innerHTML;
	toggle_button.innerHTML = closed_button_text + toggle_button_text;
	var uA = navigator.userAgent;
	if (uA.indexOf('MSIE') > -1)
	{
		useIEfix = true;
		bar.innerHTML = "";
	}
	else
	{
		bar.style.height = "0px";
	}
}

function toggle_top_bar() 
{
	if (bar.clientHeight < 0.1*max_height)
	{
			//bar.style.height = max_height + 'px';
			dostep(1);
	}
	else
	{
			//bar.style.height = 0 + 'px';
			dostep(-1);
	}
}

function dostep(inc)
{
	time_id = setTimeout('dostep(' + inc + ')',100);
	if ( inc < 0 && useIEfix)
	{
		bar.innerHTML = '';
	}
	current_height += inc*step;
	if (current_height <= 0)
	{
		current_height = 0; 
		clearTimeout(time_id);
		toggle_button.innerHTML = closed_button_text + toggle_button_text;
	}
	if (current_height >= max_height)
	{
		current_height = max_height; 
		clearTimeout(time_id);
		toggle_button.innerHTML = opened_button_text + toggle_button_text;
		if (useIEfix)
		{
			bar.innerHTML = top_ten_HTML;
		}
	}
	bar.style.height = current_height + 'px';
	if (useIEfix && current_height == 0)
	{
		bar.style.height = "";	
	}
}