function handle(delta) {
  if (delta<0) $('#content-wrap').stop().scrollTo( {top:'+=0px', left:'+=100px'}, 0 );
  if (delta>0) $('#content-wrap').stop().scrollTo( {top:'+=0px', left:'-=100px'}, 0 );
}

function wheel(event) {
  var delta = 0;
  if (!event) event = window.event;
  if (event.wheelDelta) {
    delta = event.wheelDelta/120;
//    if (window.opera) delta = -delta;
  } else if (event.detail) {
    delta = -event.detail/3;
  }
  if (delta) handle(delta);
  if (event.preventDefault) event.preventDefault();
	event.returnValue = false;
}

/* Initialization code. */
if (window.addEventListener) window.addEventListener('DOMMouseScroll', wheel, false);
window.onmousewheel = document.onmousewheel = wheel;