/**
 * ticker.js
 *
 * display each item as a typewriter news ticker
 * referencing to a URL
 *
 * @author Stephan Saalfeld <saalfeld@phenomene.de>
 * @copyright Copyright (c) 2004-2006, Stephan Saalfeld
 * @version 1.2
 */

var READY = 0;
var SCROLLING = 1;
var ENDOFTEXT = 2;

var TICKERLINES = 3;
//var TICKERLINEHEIGHT = 13;
var TICKERLINEHEIGHT = 1.3;
var SCROLLSTEPS = 13;
var TICKTIME = 100;
var ENDOFTEXTTIME = 2000;
var ENDOFLINETIME = 500;
var CURSORBLINKTIME = 100;


var ticker = false;

function Ticker()
{
	var i;

	this.text = new Array();
	this.link = new Array();

	this.text[0] = "Aktuelles:";
	this.link[0] = new Array();
	this.link[0]["url"] = "http://ziegel.de/?src=presse";
	this.link[0]["target"] = "";
	

	this.text[1] = unescape("Deutsche%20Dachziegel%20bringen%20die%0ASonne%20auf%20das%20Haus");
	this.link[1] = new Array();
	this.link[1]["url"] = "http://ziegel.de/?src=presse&ID=91631&Position=0";
	this.link[1]["target"] = "";
	this.text[2] = unescape("Ziegelindustrie%3A%20Seit%2015%20Jahren%0Asinkender%20Markt");
	this.link[2] = new Array();
	this.link[2]["url"] = "http://ziegel.de/?src=presse&ID=91624&Position=0";
	this.link[2]["target"] = "";
	this.text[3] = unescape("17.%20Internationale%20Tagung%0AZiegeleigeschichte%20%2F%0AZiegeleimuseen");
	this.link[3] = new Array();
	this.link[3]["url"] = "http://ziegel.de/?src=presse&ID=91549&Position=0";
	this.link[3]["target"] = "";
	this.text[4] = unescape("Abrisspr%E4mie%3A%20Neu%20bauen%20ist%20oft%0Adie%20beste%20Sanierung");
	this.link[4] = new Array();
	this.link[4]["url"] = "http://ziegel.de/?src=presse&ID=91526&Position=0";
	this.link[4]["target"] = "";
	this.text[5] = unescape("Asbest%20runter%20-%20Neue%20Dachziegel%0Aund%20Solarelemente%20rauf");
	this.link[5] = new Array();
	this.link[5]["url"] = "http://ziegel.de/?src=presse&ID=91388&Position=0";
	this.link[5]["target"] = "";


	this.index = 0;

	this.paper = document.getElementById( "ticker" );
	this.cursor = document.getElementById( "cursor" );
	this.linkImg = document.getElementById( "ticklink" );

	this.cursorTimer = false;
	this.tickTimer = false;
	
	this.scrollState = 0;
	this.lines = 0;
	
	for ( i = 1; i < TICKERLINES; ++i )
	{
		this.paper.replaceChild( document.createElement( "br" ), this.cursor );
		this.paper.appendChild( this.cursor );
	}
	
         this.chLink = function()
         {
              var link;
              this.paper.parentNode.removeChild(this.paper.nextSibling);
              if (this.link[this.index]["url"] != "")
              {
                  link = document.createElement("a");
                  link.href = this.link[this.index]["url"];
                  link.target = this.link[this.index]["target"];
                  link.appendChild(this.linkImg);
                  this.paper.parentNode.appendChild(link);
              }
              else
              {
                  this.paper.parentNode.appendChild(this.linkImg);
              }
              return;
         }

         this.lastText = this.text[0];
         this.chLink();
         this.state = READY;

         this.tick = function()
         {
              var i;
              var letter;
              var wait;
              if (this.tickTimer)
              {
                  self.clearTimeout(this.tickTimer);
                  this.tickTimer = false;
              }
              switch (this.state)
              {
              case READY:
                   if (this.lastText.length > 0)
                   {
                       letter = this.lastText.substr(0,1);
                       this.lastText = this.lastText.substr(1,this.lastText.length-1);
                       if (letter.charCodeAt(0) == 10)
                       {
                           this.paper.replaceChild(document.createTextNode(String.fromCharCode(160)), this.cursor);
                           this.paper.appendChild(document.createElement("br"));
                           this.state = SCROLLING;
                           wait = ENDOFLINETIME;
                       }
                       else if (letter.charCodeAt(0) == 8)
                       {
                           this.paper.removeChild(this.paper.lastChild);
                           this.paper.removeChild(this.paper.lastChild);
                           this.paper.appendChild(this.cursor);
                           wait = TICKTIME;
                       }
                       else
                       {
                           this.paper.replaceChild(document.createTextNode(letter), this.cursor);
                           this.paper.appendChild(this.cursor);
                           wait = TICKTIME;
                       }
                   }
                   else
                   {
                       this.paper.replaceChild(document.createTextNode(String.fromCharCode(160)), this.cursor);
                       this.state = ENDOFTEXT;
                       wait = ENDOFTEXTTIME;
                   }
                   break;
              case SCROLLING:
                   if (this.scrollState%SCROLLSTEPS < SCROLLSTEPS-1)
                   {
                       ++this.scrollState;
                       //this.paper.style.top = Math.floor(-TICKERLINEHEIGHT*this.scrollState/SCROLLSTEPS) + "px";
					   this.paper.style.top = -TICKERLINEHEIGHT*this.scrollState/SCROLLSTEPS + "em";
                   }
                   else
                   {
                       this.paper.appendChild(this.cursor);
                       ++this.scrollState;
					   ++this.lines;
                       this.state = READY;
                   }
                   wait = 20;
                   break;				
              case ENDOFTEXT:
                   if (this.scrollState < SCROLLSTEPS*(TICKERLINES+this.lines))
                   {
                       ++this.scrollState;
                       //this.paper.style.top = Math.max(-TICKERLINEHEIGHT*TICKERLINES, Math.floor(-TICKERLINEHEIGHT*this.scrollState/SCROLLSTEPS)) + "px";
					   //this.paper.style.top = Math.floor(-TICKERLINEHEIGHT*this.scrollState/SCROLLSTEPS) + "px";
					   this.paper.style.top = -TICKERLINEHEIGHT*this.scrollState/SCROLLSTEPS + "em";

                   }
                   else
                   {
                       while(this.paper.firstChild)
                       {
                         this.paper.removeChild(this.paper.firstChild);
                       }
                       this.paper.style.top = "0px";
                       for (i = 1; i < TICKERLINES; ++i)
                       {
                            this.paper.appendChild(document.createElement("br"));
                       }
                       this.paper.appendChild(this.cursor);
                       this.scrollState = 0;
					   this.lines = 0;
                       this.index = (++this.index)%this.text.length;
                       this.lastText = this.text[this.index];
                       this.chLink();
                       this.state = READY;
                   }
                   wait = 20;
                   break;
              }
              this.tickTimer = self.setTimeout("ticker.tick()", wait);
              return;
         }
         this.cursorTick = function()
         {
              if (this.cursorTimer)
              {
                  self.clearTimeout(this.cursorTimer);
                  this.cursorTimer = false;
              }
              if (this.cursor.className == "pos") this.cursor.className = "neg";
              else this.cursor.className = "pos";
              this.cursorTimer = self.setTimeout("ticker.cursorTick()", CURSORBLINKTIME);

              return;
         }
         this.tickTimer = self.setTimeout("ticker.tick()", TICKTIME);
         this.cursorTimer = self.setTimeout("ticker.cursorTick()", CURSORBLINKTIME);

}


function tick() 
{
    if (document.getElementById("ticker"))
    {
         ticker = new Ticker();
		 ticker.paper.parentNode.style.display = "block";
         ticker.cursorTick();
         //self.status = "Bundesverband der Deutschen Ziegelindustrie e.V.";

         return;
    }
    else return;
}