var count=15;
var interval=15000;
var last_id=0; // id ostatniego newsa
var last_check=0;
var completed=false; // czy poprzednie sprawdzenie juz ukonczono
var newsy=new Array();
var fps=1000/25;
var scrollby=2;
var scroll=true;
var scroll_vis=true;
document.write('</div><div id="scroll" onmouseover="scroll=false;" onmouseout="scroll=true;"></div><div id="scroll_logo"></div><a href="javascript:hidescroll();" title="hide"><div id="scroll_close"></div></a>');

function hidescroll() {
	scroll_vis=false;
	el=document.getElementById('scroll');
	el.style.display='none';
}

// object prototyp
function news(id,orig_id,title,link,text,timestamp,posx) {
	this.id=id;
	this.orig_id=orig_id;
	this.title=title;
	this.link=link;
	this.text=text;
	this.timestamp=timestamp;
	this.posx=posx;
	this.gotox=posx;
	this.width=0;
}

function sortId(a,b) {
	return a.id>b.id;
}

function sortPosx(a,b) {
	if (a.posx!='NaN' && b.posx!='NaN')
	return a.posx-b.posx; else return 0;
}

function myindexOf(id) {
	for(i=0;i<newsy.length;++i) {
		if (newsy[i].orig_id==id) return i;
	}
	return -1;
}

function reload() {
	completed=false;
	var xmlHttpReq = false;
	var self = this;
	// Mozilla/Safari
	if (window.XMLHttpRequest) {
		self.xmlHttpReq = new XMLHttpRequest();
	}
	// IE
	else if (window.ActiveXObject) {
		self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
	}

	self.xmlHttpReq.open('GET', 'http://multiemu.net/newsscroll/newsfeed.php?lid='+last_id+'&rand='+Math.floor(Math.random()*100000), true);
	self.xmlHttpReq.onreadystatechange = function() {
		if (self.xmlHttpReq.readyState == 4) {
			content=self.xmlHttpReq.responseText;
			d=new Date();
			last_check=d.getTime();
			if (content.length) { // strona cos zwrocila
				newsy.sort(sortId);
				arr=content.split("\1"); // rozbijamy zwrocone linie na tablice
				for(arrpos=0;arrpos<arr.length-1;) {
					idx=myindexOf(arr[arrpos+1]);
					if (idx!=-1) {
						if (arr[arrpos+2]) { // jesli ustawiony tytul
							last_id=Math.max(last_id,newsy[idx].id=arr[arrpos]);
							newsy[idx].orig_id=arr[++arrpos];
							newsy[idx].title=arr[++arrpos].replace(/ /g,'&nbsp;');
							newsy[idx].link=arr[++arrpos];
							newsy[idx].text=arr[++arrpos];
							newsy[idx].timestamp=arr[++arrpos];
							arrpos++;
						} else { // jesli nie ma tytulu znaczy ze wywalamy niusa
							last_id=Math.max(last_id,arr[arrpos+1]);
							newsy.splice(idx,1);
							arrpos+=6;
						}
					} else 
					if (arr[arrpos+2]) { // jesli tytul jest ustawiony
						if (newsy.length>=count) newsy.shift();
						posx="NaN"; if (newsy.length>0) posx=newsy[newsy.length-1].posx;
						last_id=Math.max(last_id,arr[arrpos]);
						newsy.push(new news(arr[arrpos++],
								arr[arrpos++],
								arr[arrpos++].replace(/ /g,'&nbsp;'),
								arr[arrpos++],
								arr[arrpos++],
								arr[arrpos++],
								posx));
					} else {
						last_id=Math.max(last_id,arr[arrpos]);
						arrpos+=6;
					}
				}
				newsy.sort(sortPosx);
				el=document.getElementById('scroll');
				html='';
				for (i=0;i<newsy.length;++i) {
					html+='<a href="'+newsy[i].link+'" title="'+newsy[i].text+'" id="nurl'+newsy[i].id+'" target="blank">'+newsy[i].title+'</a>';
				}
				el.innerHTML=html;
			}
			completed=true;
		}
		return 0;
	}
	self.xmlHttpReq.send("");
}

var tajm=new Date().getTime(); 

function timer() {
	el=document.getElementById('scroll');
//	pager=getRect(el);
	pwidth=el.offsetWidth;	
        ypos=document.body.clientHeight-el.offsetHeight+document.body.scrollTop;
	el.style.top=ypos+'px';
	el=document.getElementById('scroll_logo');
	el.style.top=ypos+'px';
	el=document.getElementById('scroll_close');
	el.style.left=(pwidth-el.offsetWidth)+'px';
	el.style.top=ypos+'px';
	var tajm2=new Date().getTime();
//	fpsskip=Math.max(Math.floor((tajm2-tajm)/fps),1);
//	tajm+=fpsskip*fps;
//	tajm=tajm2;
	fpsskip=1;
	if (tajm2>last_check+interval && completed) reload();

	for (i=0;i<newsy.length;++i) {
		el=document.getElementById('nurl'+newsy[i].id);
//		r=getRect(el);
		newsy[i].width=el.offsetWidth;
		if (newsy[i].posx!="NaN") {
			el.style.left=Math.floor(newsy[i].posx)+'px';
		}
	}

	for (j=0;j<fpsskip;++j) {
		posx=0;
		rollover=false;
		for (i=0;i<newsy.length;++i) {
			if (newsy[i].posx=="NaN") {
				newsy[i].posx=posx;
				newsy[i].gotox=posx;
			} else if (i>0) {
				newsy[i].gotox=posx;
			}
			
			if (scroll) {
				newsy[i].posx-=scrollby;
				newsy[i].gotox-=scrollby;
				if (Math.abs(newsy[i].posx-newsy[i].gotox)>=scrollby) newsy[i].posx+=(newsy[i].gotox-newsy[i].posx)/10.0;
				else newsy[i].posx=newsy[i].gotox;
			}
			
			posx=newsy[i].gotox+newsy[i].width;
			if (i==0 && newsy[i].posx<-newsy[i].width) rollover=true;
		}
		if (rollover)  {
			newsy[0].posx=newsy[0].gotox=Math.max(pwidth,posx);
			newsy.push(newsy.shift());
			i=-1;
		}
	}
	if (scroll_vis) window.setTimeout('timer()',fps);
}

reload();
timer();