recursive folder list

function rec1(p) {
   dir1[p]=true;
   var r=new XMLHttpRequest();
   r.open("GET",p);
   r.onload=function(){
       var s=this.response;
       if(this.status==200){
          //cache1[p]=s;
          var re=new RegExp('<tr><td valign="top">.*?</td><td><a href="(.*?)">.*?</a></td><td align="right">(.*?) *</td><td align="right">(.*?)</td><td>&nbsp;</td></tr>','gim'),m,a=[];
          if (true) { // stringify
             while(m=re.exec(s))a.push(m.slice(1).join("|"));
             cache1[p]=a.join("\n");
             }
          else { // native
             while(m=re.exec(s))a.push(m.slice(1));
             cache1[p]=a;
             }
          console.log(p,a.length);
          };
       var b=s.match(/\d+\/(?=">.*?<\/a>)/g)||[],p1;
       for (i=0;i<b.length;i++){
          p1=p+b[i];
          // console.log(p1);
          if (!dir1.hasOwnProperty(p1)) {
             dir1[p1]=false;
             setTimeout(rec1,i*200,p1);
             }
          }
       }
   r.send();
   return true;
}
var cache1=cache1||{};
var dir1=dir1||{};
rec1("http://www.wallpowper.com/wallpaper/");


/*
http://s1.ob5.ru/images/0/
http://s2.ob5.ru/images/0/
http://s3.ob5.ru/images/0/
http://wallpaperscraft.com/image/uploads/
http://www.wallpowper.com/wallpaper/
*/

/*
// save cache1 as file
var blob1= new Blob([JSON.stringify(cache1,null,"\t")],{type:'application/json'});
var aa=document.createElement("a");
aa.download="wallpowper.txt";
aa.href=window.webkitURL.createObjectURL(blob1);
aa.click()
*/