## mark a section (Learn more)

Effect.Scroll = Class.create(); Object.extend(Object.extend(Effect.Scroll.prototype, Effect.Base.prototype), { initialize: function(element) { this.element = $(element); var options = Object.extend({ x: 0, y: 0, mode: 'absolute' } , arguments[1] || {} ); this.start(options); }, setup: function() { if (this.options.continuous && !this.element._ext ) { this.element.cleanWhitespace(); this.element._ext=true; this.element.appendChild(this.element.firstChild); } this.originalLeft=this.element.scrollLeft; this.originalTop=this.element.scrollTop; if(this.options.mode == 'absolute') { this.options.x -= this.originalLeft; this.options.y -= this.originalTop; } else { } }, update: function(position) { this.element.scrollLeft = this.options.x * position + this.originalLeft; this.element.scrollTop = this.options.y * position + this.originalTop; } });

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