横向滚动插件

(function ( $ ) {
$.fn.ilscroll=function(options){
var settings = $.extend({
s:45
}, options );
$this=this;
$children=this.children();
$parent=this.parent();
$count=$children.size();
$margin=parseInt($children.css('margin-left'))+parseInt($children.css('margin-right'));
$childrenwidth=$children.width()+$margin;
$parentwidth=$parent.width();
$width=($count*$childrenwidth);
if($width<$parentwidth){
return false;
}
$clone= $children.clone();
this.prepend($clone);
this.width($width*2);
$inter=
setInterval(function(){
$marginleft=$this.css('margin-left');
$marginleft=
parseInt($marginleft);
$childh=
parseInt($this.children().width());
if(Math.abs($marginleft)>=$width){
$this.css('margin-left',"0px");
}else{
$this.css('margin-left',$marginleft-1+"px");
}
},settings.s);
this.on('mouseover',function(){
clearInterval($inter);
});
this.on('mouseout',function(){
$inter=setInterval(function(){
$marginleft=$this.css('margin-left');
$marginleft=
parseInt($marginleft);
$childh=
parseInt($this.children().width());
if(Math.abs($marginleft)==$width){
$this.css('margin-left',"0px");
}else{
$this.css('margin-left',$marginleft-1+"px");
}
},settings.s);
});
};
}( jQuery ));

 当子元素不比父元素宽时，不会发生滚动。

使用

$('.foo').ilscroll()

一个参数s用于控制速度.

修改用于应对margin-auto

(function ( $ ) {
$.fn.ilscroll=function(options){
var settings = $.extend({
s:45
}, options );
$this=this;
$children=this.children();
$parent=this.parent();
$count=$children.size();
$marginleft=$children.css('margin-left')=='auto'?0:parseInt($children.css('margin-left'));
if($children.css){
}
$children.css('margin-left','0px');
$children.css('margin-right','0px');
$margin=parseInt($children.css('margin-left'))+parseInt($children.css('margin-right'));
$childrenwidth=parseInt($children.width())+$margin;
$parentwidth=parseInt($parent.width());
$width=($count*$childrenwidth);
if($width<$parentwidth){
return ;
}else{
$clone= $children.clone();
this.prepend($clone);
this.width($width*2);
}
$inter=	setInterval(function(){
$marginleft=$this.css('margin-left');
if($marginleft==='auto'){
$marginleft=0;
}else{
$marginleft=parseInt($marginleft);
}
$childh=
parseInt($this.children().width());
if(Math.abs($marginleft)>=$width){
$this.css('margin-left',"0px");
}else{
$this.css('margin-left',(($marginleft)-1)+"px");
}
},settings.s);
this.on('mouseover',function(){
clearInterval($inter);
});
this.on('mouseout',function(){
$inter=setInterval(function(){
$marginleft=$this.css('margin-left');
$marginleft=
parseInt($marginleft);
$childh=
parseInt($this.children().width());
if(Math.abs($marginleft)==$width){
$this.css('margin-left',"0px");
}else{
$this.css('margin-left',$marginleft-1+"px");
}
},settings.s);
});
};
}( jQuery ));