/***********************************************
* 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 delay = 9000; //set delay between message change (in miliseconds)
var maxsteps=30; // number of steps to take to change from start color to endcolor
var stepdelay=40; // time in miliseconds of a single step
//**Note: maxsteps*stepdelay will be total time in miliseconds of fading effect
var startcolor= new Array(255,255,255); // start color (red, green, blue)
var endcolor=new Array(102,102,102); // end color (red, green, blue)

var fcontent=new Array();
begintag='<div>'; //set opening tag, such as font declarations
fcontent[0]="Aviation produces about 2 percent of the world's carbon dioxide emissions. This compares to 14 percent from agriculture, 17 percent from forestry and 26 percent from energy supply. ";
fcontent[1]="In the United States, aviation also produces about 2 percent of the total carbon emissions.";
fcontent[2]="Over the past 40 years, aviation has reduced its collective carbon emissions by 70 percent on a per-seat-mile basis.";
fcontent[3]="New jet engines are more fuel efficient, on a per-passenger-mile basis, than almost every model of automobile.";
fcontent[4]="Virtually every part of commercial aircraft are being improved to increase fuel efficiency. This includes engine advances, use of composite materials in the body of the aircraft, incorporation of winglets and other wing technologies and research into alternative fuels.";
fcontent[5]="Operations are also being improved, namely the use of satellite technology to make flight paths more efficient. Airlines are even concentrating on maintenance and upkeep – even keeping the planes clean - to make operations and fuel efficient as possible.";
fcontent[6]="Manufacturers and airlines are investing in research into alternative fuels, with an emphasis on non food-based biofuels. There is even research on incorporating hydrogen fuel cells into aviation designs.";
fcontent[7]="U.S. aviation manufacturers have joined with their international counterparts and pledged to make our environmental performance even better. We signed the Air Transportation Action Group Summit Declaration in April 2008 committing ourselves to a pathway to carbon-neutral growth and the aspiration to a carbon-free future.";
closetag='</div>';

var fwidth='180px'; //set scroller width
var fheight='150px'; //set scroller height

var fadelinks= 1;  //should links inside scroller content also fade like text? 0 for no, 1 for yes.

///No need to edit below this line/////////////////


var ie4=document.all&&!document.getElementById;
var DOM2=document.getElementById;
var faderdelay=0;
var index=0;


/*Rafael Raposo edited function*/
//function to change content
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);
    colorfade(1, 15);
  }
  else if (ie4)
    document.all.fscroller.innerHTML=begintag+fcontent[index]+closetag;
  index++
}

// colorfade() partially by Marcio Galli for Netscape Communications.  ////////////
// Modified by Dynamicdrive.com

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);
  }
}

/*Rafael Raposo edited function*/
var fadecounter;
function colorfade(step) {
  if(step<=maxsteps) {	
    document.getElementById("fscroller").style.color=getstepcolor(step);
    if (fadelinks)
      linkcolorchange(step);
    step++;
    fadecounter=setTimeout("colorfade("+step+")",stepdelay);
  }else{
    clearTimeout(fadecounter);
    document.getElementById("fscroller").style.color="rgb("+endcolor[0]+", "+endcolor[1]+", "+endcolor[2]+")";
    setTimeout("changecontent()", delay);
	
  }   
}

/*Rafael Raposo's new function*/
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] + ")");
}

if (ie4||DOM2)
  document.write('<div id="fscroller" style="border:0px solid black;width:'+fwidth+';height:'+fheight+'"></div>');

if (window.addEventListener)
window.addEventListener("load", changecontent, false)
else if (window.attachEvent)
window.attachEvent("onload", changecontent)
else if (document.getElementById)
window.onload=changecontent