/*
Left-Right scrolling window Script- © Dynamic Drive (www.dynamicdrive.com)
For full source code, visit http://www.dynamicdrive.com/
This credit MUST stay intact for use
*/

//change speed to another integer to alter the scrolling speed. Greater is faster
var currentpos=0,alt=1,curpos1=0,curpos2=-1
var offset = 100;
if (navigator.userAgent.indexOf('Safari') != -1 && window.navigator.userAgent.indexOf('Windows') == -1)
  offset = 20;


var currentFlow = 0; //0 - right, 1- left;
var flowBuffer = 0; // + right, - left;
var flowBufferLimit = 2;

function iecompattest(){
return (document.compatMode!="BackCompat")? document.documentElement : document.body
}

function scrollWindow(speed){
  if (document.all)
    temp=iecompattest().scrollLeft;
  else
    temp=window.pageXOffset ;
    
  if (alt==0)
    alt=1;
  else
    alt=0;

  if (alt==0)
    curpos1=temp;
  else
    curpos2=temp;

    if (document.all)
      currentpos=iecompattest().scrollLeft+speed;
    else
      currentpos=window.pageXOffset+speed;
      
    window.scroll(currentpos,0);

}
 
    
/** This is high-level function.
 * It must react to delta being more/less than zero.
 */
 
function handle(delta) {
    if (delta < 0)
      flowBuffer -= 1;
    else
      flowBuffer += 1;
      
    if (flowBuffer > flowBufferLimit)
      flowBuffer = flowBufferLimit;      
    if (flowBuffer < flowBufferLimit*(-1))
      flowBuffer = flowBufferLimit*(-1);      


        if (flowBuffer < 0)
		scrollWindow(offset);
        else
	  scrollWindow(offset*(-1));
}

/** Event handler for mouse wheel event.
 */
function wheel(event){
         $('#nfo').fadeOut('normal');

        var delta = 0;
        if (!event) /* For IE. */
                event = window.event;
        if (event.wheelDelta) { /* IE/Opera. */
                delta = event.wheelDelta/120;
                /** In Opera 9, delta differs in sign as compared to IE.
                 */
                if (window.opera)
                        delta = -delta;
        } else if (event.detail) { /** Mozilla case. */
                /** In Mozilla, sign of delta is different than in IE.
                 * Also, delta is multiple of 3.
                 */
                delta = -event.detail/3;
        }
        /** If delta is nonzero, handle it.
         * Basically, delta is now positive if wheel was scrolled up,
         * and negative, if wheel was scrolled down.
         */
        if (delta)
                handle(delta);
        /** Prevent default actions caused by mouse wheel.
         * That might be ugly, but we handle scrolls somehow
         * anyway, so don't bother here..
         */
        if (event.preventDefault)
                event.preventDefault();
	event.returnValue = false;
}

/** Initialization code. 
 * If you use your own event management code, change it as required.
 */
if (window.addEventListener)
        /** DOMMouseScroll is for mozilla. */
        window.addEventListener('DOMMouseScroll', wheel, false);
/** IE/Opera. */
window.onmousewheel = document.onmousewheel = wheel;