autoload pages (photo sight)

/* fetch url */
function get_url(url,callback) {
        var r=new XMLHttpRequest();
        r.open("GET",url,true);
        r.onreadystatechange=function(){
       if (this.readyState==4 && this.status==200) callback.call(this.responseText);
       }
    r.send();

}
Array.prototype.unique = function(){
return this.filter(function(s, i, a){ return i == a.lastIndexOf(s); });
}

function save1(s){
window[tag+"."+page]=s;//this.toString();
console.log("rcvd:" + page);
document.getElementById("data1").insertAdjacentHTML('beforeend',window[tag+"."+page].match(/<div id="data1">([\s\S]*?)<\/div>/im)[1]);
location.hash=page;
page++;
if (page <=50) get_url("?q="+tag+"&p="+page,function(){save1(this.toString())});
//
}
// get_url("?q="+tag+"&p="+page,function(){save1(this.toString())});

tag="c87";page=2; get_url("?q="+tag+"&p="+page,function(){save1(this.toString())});