/***********************************************

* New_News_Fader 1.0

*

* Fades news bi-directionally between any starting and ending color smoothly

*

* Written for YaBB by Eddy

* 14-Jan-2005

* Original 'fader.js' by NRg (allbrowsers_fader.mod v2.02 01/12/2002)

*

* Based upon uni-directional fading code from:

* Fading Scroller- © Dynamic Drive DHTML code library (www.dynamicdrive.com)

* This notice MUST stay intact for legal use

* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code

***********************************************/



var ie4=document.all && !document.getElementById;

var DOM2=document.getElementById;

var index=0;



function cutHex(h) { return (h.charAt(0)=="#") ? h.substring(1,7) : h}

function HexToR(h) { return parseInt((cutHex(h)).substring(0,2),16) }

function HexToG(h) { return parseInt((cutHex(h)).substring(2,4),16) }

function HexToB(h) { return parseInt((cutHex(h)).substring(4,6),16) }



var startcolor = new Array(HexToR(bcolor), HexToG(bcolor), HexToB(bcolor));

var endcolor = new Array(HexToR(tcolor), HexToG(tcolor), HexToB(tcolor));



function changecontent() {

  if (index >= fcontent.length)

    index=0;



  if (DOM2){

    document.getElementById("fscroller").style.color="rgb("+startcolor[0]+", "+startcolor[1]+", "+startcolor[2]+")";

    document.getElementById("fscroller").innerHTML=begintag+fcontent[index]+closetag;

    if (fadelinks)

      linkcolorchange(1);

    colorfadeup(1);

  } else if (ie4) {

    document.all.fscroller.innerHTML=begintag+fcontent[index]+closetag;

  }

  index++

}



function linkcolorchange(step) {

  var obj=document.getElementById("fscroller").getElementsByTagName("A");

  if (obj.length>0) {

    for (i=0;i<obj.length;i++)

      obj[i].style.color=getstepcolor(step);

  }

}



var fadecounter;



function colorfadeup(step) {

  if (step <= maxsteps) {	

    document.getElementById("fscroller").style.color = getstepcolor(step);

    if (fadelinks)

      linkcolorchange(step);

    step++;

    fadecounter = setTimeout("colorfadeup("+step+")", stepdelay);

  } else {

    clearTimeout(fadecounter);

    document.getElementById("fscroller").style.color = "rgb("+endcolor[0]+", "+endcolor[1]+", "+endcolor[2]+")";

    setTimeout("colorfadedown("+maxsteps+")", delay);

  }   

}



function colorfadedown(step) {

  if (step > 1) {	

    step--;

    document.getElementById("fscroller").style.color = getstepcolor(step);

    if (fadelinks)

      linkcolorchange(step);

    fadecounter = setTimeout("colorfadedown("+step+")", stepdelay);

  } else {

    clearTimeout(fadecounter);

    document.getElementById("fscroller").style.color = "rgb("+startcolor[0]+", "+startcolor[1]+", "+startcolor[2]+")";

    setTimeout("changecontent()", delay / 2);

  }   

}



function getstepcolor(step) {

  var diff;

  var newcolor=new Array(3);

  for(var i=0; i<3; i++) {

    diff = (startcolor[i] - endcolor[i]);

    if(diff > 0) {

      newcolor[i] = startcolor[i] - (Math.round((diff/maxsteps))*step);

    } else {

      newcolor[i] = startcolor[i] + (Math.round((Math.abs(diff)/maxsteps))*step);

    }

  }

  return ("rgb(" + newcolor[0] + ", " + newcolor[1] + ", " + newcolor[2] + ")");

}



// This bumps things down by a line in all browsers I tested with

// If you use IE4, I guess you might want to uncomment it...

// if (ie4||DOM2)

//    document.write('<div id="fscroller" style="width:'+screen.availWidth / 2+';"></div>');



if (window.addEventListener)

  window.addEventListener("load", changecontent, false);

else if (window.attachEvent)

  window.attachEvent("onload", changecontent);

else if (document.getElementById)

  window.onload=changecontent;