var Mouse = new function() {
	this.x = 0;
	this.y = 0;
	this.x_old = 0;
	this.y_old = 0;
	this.x_offset = 0;
	this.y_offset = 0;
	
    $(document).bind('mousemove', function(event){
        if(!event) event = window.event;
        Mouse.x = parseInt( event.pageX );
        Mouse.y = parseInt( event.pageY );
        Mouse.x_offset = parseInt( Mouse.x - Mouse.x_old );
        Mouse.y_offset = parseInt( Mouse.y - Mouse.y_old );
        Mouse.x_old = Mouse.x;
        Mouse.y_old = Mouse.y;
    });
} ();