I hope someone can help.

I have the following script in my page and need to activate/deactivate with an if/elsewhich checks window width.

This is the jquery in my body:

1. <script>
   	$(function() {$("body").mousewheel(function(event, delta) {
   	this.scrollLeft -= (delta * 30);
   	event.preventDefault();
   	});
   	});

2. </script>

while this is is the js file:

  

   
(function($) {
   


   
var types = ['DOMMouseScroll', 'mousewheel'];
   


   
if ($.event.fixHooks) {
   
 for ( var i=types.length; i; ) {
   
 $.event.fixHooks[ types[--i] ] = $.event.mouseHooks;
   
 }
   
}
   


   
$.event.special.mousewheel = {
   
 setup: function() {
   
 if ( this.addEventListener ) {
   
 for ( var i=types.length; i; ) {
   
 this.addEventListener( types[--i], handler, false );
   
 }
   
 } else {
   
 this.onmousewheel = handler;
   
 }
   
 },
   
 
   
 teardown: function() {
   
 if ( this.removeEventListener ) {
   
 for ( var i=types.length; i; ) {
   
 this.removeEventListener( types[--i], handler, false );
   
 }
   
 } else {
   
 this.onmousewheel = null;
   
 }
   
 }
   
};
   


   
$.fn.extend({
   
 mousewheel: function(fn) {
   
 return fn ? this.bind("mousewheel", fn) : this.trigger("mousewheel");
   
 },
   
 
   
 unmousewheel: function(fn) {
   
 return this.unbind("mousewheel", fn);
   
 }
   
});
   


   


   
function handler(event) {
   
 var orgEvent = event || window.event, args = [].slice.call( arguments, 1 ), delta = 0, returnValue = true, deltaX = 0, deltaY = 0;
   
 event = $.event.fix(orgEvent);
   
 event.type = "mousewheel";
   
 
   
 // Old school scrollwheel delta
   
 if ( orgEvent.wheelDelta ) { delta = orgEvent.wheelDelta/120; }
   
 if ( orgEvent.detail ) { delta = -orgEvent.detail/3; }
   
 
   
 // New school multidimensional scroll (touchpads) deltas
   
 deltaY = delta;
   
 
   
 // Gecko
   
 if ( orgEvent.axis !== undefined && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
   
 deltaY = 0;
   
 deltaX = -1*delta;
   
 }
   
 
   
 // Webkit
   
 if ( orgEvent.wheelDeltaY !== undefined ) { deltaY = orgEvent.wheelDeltaY/120; }
   
 if ( orgEvent.wheelDeltaX !== undefined ) { deltaX = -1*orgEvent.wheelDeltaX/120; }
   
 
   
 // Add event and delta to the front of the arguments
   
 args.unshift(event, delta, deltaX, deltaY);
   
 
   
 return ($.event.dispatch || $.event.handle).apply(this, args);
   
}
   


   
})(jQuery);