一个JS封装类

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/*<pre>
MyW3 Js Tools Kit 1.0

更新说明:
1.Swf添加了透明支持
2.增加了_Get对象
3.增加了修改Class函数

函数:_Swf(s,w,h,d,i)
功能:加载SWF文件;
用法:_Swf(Flash文件名,宽,高,文件背景是否透明,FlashURI);
宽高:可以是数字，也可以为站父对象的百分比(如：100%)，可以省略,默认100%;
文件背景是否透明：1为透明，其他未不透明，可以省略,默认透明;
FlashURI：Flash默认的保存路径，可以省略，默认未myw3_res指定的路径;

函数:_Get(o,t,p)
功能:获取DOM对象;
用法:_Get(对象标识,标识类型,父对象);
对象标识:根据标识类型根据对象标识获取对象;
标识类型:id、tagname、name,可以省略,默认id;
父对象:可以省略,默认documet;

函数:o.Class.add(classname),o.Class.get(),o.Class.remove(classname)
功能:添加/删除/查看对象的ClassName
用法:_Class(对象).add(Class名称),_Class(对象).get(),_Class(对象).remove(Class名称)

请尊重作者的劳动成果，保存下面的版权连接
版权所有:<a href="http://myw3.cn/">MyW3</a>
</pre>*/
var myw3=new myw3sys();
var myw3_res="/Js/resource/";                //资源文件的默认路径

function myw3sys(){
        this.cn=new function(){
                this.ver="1.00.0710";
                this.sid="80710"
                this.home=new function(){
                        this.name="MyW3 Js Tools Kit"
                        this.url="http://labs.myw3.cn/js/resource/myw3sys.js"
                        this.homesite="http://labs.myw3.cn/js/myw3sys/"
                        this.GoHome=function(){location.href=this.homesite;}
                        this.Download=function(){location.href=this.url;}
                        return this.url;
                }
        }
        this.cn_class=new function(){
                var q=(window.ActiveXObject)?"className":"class";
                this.q=q;
                this.add=function(c){
                        if(this.get()&&this.get()!="undefined"){
                                if(this.get().indexOf(c)==-1)
                                        tmp=this.get()+" "+c;
                        }else{
                                tmp=c;
                        }
                        po.setAttribute(q,tmp);
                }
                this.remove=function(c){
                        if(this.get()){
                                var tmp=this.get();
                                tmp=tmp.replace(" "+c,"");
                                tmp=tmp.replace(c+" ","");
                                if(this.get().indexOf(" ")==-1){tmp=tmp.replace(c,"");}
                        }
                        po.setAttribute(q,tmp);
                }
                this.get=function(){
                        return po.getAttribute(q);
                }
        }
        this.cn_swf=function(s,w,h,d,i){
                s=s.replace("fla","swf");
                if(!w)
                        w="100%";
                if(!h)
                        h="100%";
                if(!d)
                        d=1;
                        //d==0?transparent:Opaque;
                if(!i)
                        //默认的FlashURI
                        i=myw3_res;
                d=d==1?"transparent":"Opaque";
                document.writeln('<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0"  width="'+w+'" height="'+h+'" />');
                document.writeln('<param name="movie" value="'+i+s+'" />');
                document.writeln('<param name="quality" value="high" />');
                document.writeln('<param name="wmode" value="'+d+'" />');
                document.writeln('<embed src="'+i+s+'" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="'+w+'" height="'+h+'" wmode="'+d+'">');
                document.writeln('</embed></object>');
        }
        this.cn_get=function(o,t,p){
                if(!p)
                p=document;
                switch(t){
                        case "name":po=p.getElementsByName(o);break;
                        case "tagname":po=p.getElementsByTagName(o);break;
                        default:po=document.getElementById(o);break;
                }
                po.Class=new _Class;
                return po;
        }
}
//_Class请勿修改，否则导致程序不正常
function _Class(){
        return myw3.cn_class;
}

function _Swf(s,w,h,d,i){
        myw3.cn_swf(s,w,h,d,i);
}

//兼容Beta1.0版本的myw3_swf
function myw3_swf(s,w,h,i){
        myw3.cn_swf(s,w,h,1,i);
}

function _Get(o,t,p){
        return myw3.cn_get(o,t,p);
}

function _Help(){
        myw3.cn.home.GoHome();
}

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