var slideshow=new Class({Implements:Options,options:{up:true,step:5,time:10,auto:true,pause:5000,onStart:function(){},onFinish:function(){}},initialize:function(a,b,d,e,f){if(d<=0||e<=0){return}var c=$(a),s=$(b);this.index=0;this._timer=null;this._slider=s;this._parameter=d;this._count=e||0;this._target=0;this.setOptions(f);this.up=!!this.options.up;this.step=Math.abs(this.options.step);this.time=Math.abs(this.options.time);this.auto=!!this.options.auto;this.pause=Math.abs(this.options.pause);this.onStart=this.options.onStart;this.onFinish=this.options.onFinish;c.style.overflow="hidden";c.style.position="relative";s.style.position="absolute";s.style.top=s.style.left=0},start:function(){if(this.index<0){this.index=this._count-1}else if(this.index>=this._count){this.index=0}this._target=-1*this._parameter*this.index;this.onStart();this.move()},move:function(){$clear(this._timer);var a=this,style=this.up?"top":"left",_now=parseInt(this._slider.style[style],10)||0,_step=this.getStep(this._target,_now);if(_step!==0){this._slider.style[style]=(_now+_step)+"px";this._timer=setTimeout(function(){a.move()},this.time)}else{this._slider.style[style]=this._target+"px";this.onFinish();if(this.auto){this._timer=setTimeout(function(){a.index++;a.start()},this.pause)}}},getStep:function(a,b){var c=(a-b)/this.step;if(c===0){return 0}if(Math.abs(c)<1){return(c>0?1:-1)}return c},stop:function(a,b){$clear(this._timer);this._slider.style[this.up?"top":"left"]=this._target+"px"}});document.addEvent('domready',function(){var a=$('idSelector').getElements('li');var b=new slideshow("idSlideshow","idSlider",236,3,{onStart:function(){$each(a,function(o,i){o.className=b.index==i?"on":""})}});b.start();$each(a,function(o,i){o.onmouseover=function(){o.className="on";b.auto=false;b.index=i;b.start()};o.onmouseout=function(){o.className="";b.auto=true;b.start()}})});