/**************************************************
* SCROLL TEXT
* (c)2002, Martin Sykora, VIZUS, v2.1
***************************************************/
var x_position;
var stop_position;
var index = 1;
var brw = null;
var brwVer = null;

var ua = window.navigator.userAgent;
if (ua.match(/opera\/(\d+)\.(\d+)/i)) var brw = 'OP';
else if (ua.match(/msie (\d+)\.(\d+)/i)) var brw = 'IE';
else if (ua.match(/netscape\d+\/(\d+)\.(\d+)/i)) var brw = 'NN';
else if (ua.match(/mozilla\/(\d+)\.(\d+)/i)) var brw = 'MZ';
var brwVer = RegExp.$1 ? RegExp.$1+'.'+(RegExp.$2 ? RegExp.$2 : 0) : 0;

function init() { // vezme prvni zpravu a nastavi ji
	if(messages > 0) {
		obj = set_message();
		scroll(obj);
	}
}

function get_start_position() { // zjisti odkud ma zprava vyrazit
	if(document.all) // IE
		window_width = document.body.clientWidth;
	else // other
		window_width = window.innerWidth;
	x_position = window_width - 174 - 248 - 10;
}

function set_message() { // najde a nastavi aktualni zpravu
	get_start_position();
	obj = document.getElementById('content' + index);
	obj.style.left = x_position;
	obj.style.top = 0;
	content_width = 1700; // tady fakt nevim...
	if(brw == 'IE' && brwVer > 5) { // IE ver 5.5, 6
		content_width = obj.scrollWidth;
	}
	stop_position = -content_width;
	obj.style.visibility = "visible";
	return obj;
}

function swap_message() { // prechod z jedne zpravy na druhou
	obj.style.visibility = "hidden";
	index++
	if (index > messages) index = 1;
	obj = set_message();
	scroll(obj);
}

function scroll(obj) {
	if(x_position < stop_position) {
		setTimeout("swap_message()", pause);
	}
	else {
		obj.style.left = x_position;
		x_position--;
		setTimeout("scroll(obj)", speed);
	}
}