/* Horiz Scroll */
     function mouseScroll(delta,step){
	if(delta<0) window.scrollBy(step,0);
	else window.scrollBy(-step,0)}


 /* Get Mouse Wheel */
    function mouseWheel(event){
	var delta=0;
	if(!event) event=window.event;
	if(event.wheelDelta) delta=event.wheelDelta/120; 
	else if(event.detail) delta=-event.detail/3;
	if(delta){
	    mouseScroll(delta,150);
	    if(event.preventDefault) event.preventDefault();
	    event.returnValue=false}
	}


     /* Attach Events */
	if (window.addEventListener) window.addEventListener('DOMMouseScroll',mouseWheel,false);
	window.onmousewheel=document.onmousewheel=mouseWheel;