jquery 스크롤 광고 위아래로_jquery

(function($){
$.fn.extend( {
rollList:function(옵션){
option=$.extend({
방향:"위",
단계:1,
시간:23
},옵션) ;
var step_coe,scroll_coe,score_coe;
if(option.direction=="up")
{
step_coe=1;
score_coe=1;
}else
{
step_coe=-1;
scroll_coe=-1;
score_coe=0
}
return this.each(function(){
var $this=$(this);
var _this=this; var itemHeight
var temp=$(""); .css("overflow","hidden").children()
.appendTo(temp)
$this.append(temp.clone(true)).append(temp)
itemHeight= $this.children();
itemHeight=itemHeight.eq(1).offset().top-itemHeight.eq(0).offset().top
while($this.children(": last").offset().top-$this.offset().top<=$this.height())
$this.append(temp.clone(true));
varroll;
this.scrollTop=itemHeight*(1-score_coe);
roll=function (){
temp=setInterval(function(){
if(_this.scrollTop*scroll_coe>=itemHeight*score_coe)
{
_this.scrollTop=(_this.scrollTop-itemHeight)*scroll_coe;
}
_this.scrollTop =option.step*step_coe;

},option.time);
}
$this.hover(function(){
clearInterval(temp);
},function(){
roll();
});
롤();
});
}
})
}(jQuery));



调用如下：