function SqueereHTTP(url, instance) {
   this.loaded = false;
   this.url=url;
   this.script;
   this.firstparam=true;
   this.serverResponse;
   this.instance=instance;
   that=this;
   this.AddParam = function(p, v) {
      if (that.firstparam) {
         that.url+='?'+p+'='+v;
         that.firstparam=false;
      } else {
         that.url+='&'+p+'='+v;
      }
   }
   this.Request = function(force) {
      that.AddParam('instance', that.instance);
      if (force) {
         var axd = new Date();
         var shake = axd.getDate()+""+axd.getMonth()+1+""+axd.getFullYear()+""+axd.getHours()+""+axd.getMinutes()+""+axd.getSeconds();
         that.AddParam('squeereshaker', shake);
      }
      that.script = document.createElement('script');
      that.script.setAttribute('charset','iso-8859-1');
      that.script.setAttribute('type','text/javascript');
      that.script.setAttribute('src', that.url);    
      that.script.onload = that.onLoad;
      that.script.onreadystatechange = that.onLoad;
      document.getElementsByTagName('head')[0].appendChild(that.script);     
   }
   this.onComplete = function(serverResponse) { }
   this.onLoad = function() {
      if (that.loaded) { return; }
      that.loaded=true;
   };	
   return this;
}
function base64_decode( data ) {
    var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
    var o1, o2, o3, h1, h2, h3, h4, bits, i = 0, ac = 0, dec = "", tmp_arr = [];
    if (!data) {
        return data;
    }
    data += '';
    do {  // unpack four hexets into three octets using index points in b64
        h1 = b64.indexOf(data.charAt(i++));
        h2 = b64.indexOf(data.charAt(i++));
        h3 = b64.indexOf(data.charAt(i++));
        h4 = b64.indexOf(data.charAt(i++));
        bits = h1<<18 | h2<<12 | h3<<6 | h4;
        o1 = bits>>16 & 0xff;
        o2 = bits>>8 & 0xff;
        o3 = bits & 0xff;
        if (h3 == 64) {
            tmp_arr[ac++] = String.fromCharCode(o1);
        } else if (h4 == 64) {
            tmp_arr[ac++] = String.fromCharCode(o1, o2);
        } else {
            tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);
        }
    }while (i < data.length);
    dec = tmp_arr.join('');
    dec = this.utf8_decode(dec);
    return dec;
}
function utf8_decode ( str_data ) {
    var tmp_arr = [], i = 0, ac = 0, c1 = 0, c2 = 0, c3 = 0;
    str_data += '';
    while ( i < str_data.length ) {
        c1 = str_data.charCodeAt(i);
        if (c1 < 128) {
            tmp_arr[ac++] = String.fromCharCode(c1);
            i++;
        } else if ((c1 > 191) && (c1 < 224)) {
            c2 = str_data.charCodeAt(i+1);
            tmp_arr[ac++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));
            i += 2;
        } else {
            c2 = str_data.charCodeAt(i+1);
            c3 = str_data.charCodeAt(i+2);
            tmp_arr[ac++] = String.fromCharCode(((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
            i += 3;
        }
    }
    return tmp_arr.join('');
}
libfly={};
libfly.ISBNok=function(txt){
	var taille=txt.length;
	var chk=0;
	if(taille==10){
		for(var i=0;i<=9;i++){
			var lettre=txt.charAt(i).toUpperCase();
			chk+=(lettre=='X')?10:lettre*(10-i)
		}
		return(chk%11==0)
	}else if(taille==13){
		for(var i=0;i<=12;i++){
			var lettre=txt.charAt(i)*1;
			chk+=(i%2==0)?lettre:3*lettre
		}
		return(chk%10==0)
	}else{
		return false
	}
};
libfly.dedans=function(tab,el){
	for(var i=0;i<tab.length;i++){
		if(tab[i]==el){
			return true
		}
	};
	return false
};
libfly.findIsbns=function(txt){
	var isbns=[];
	if(document.getElementById('libfly_isbn')){
		var isbn2=document.getElementById('libfly_isbn').value;
		if(isbn2!=null&&this.ISBNok(isbn2)){
			isbns.push(isbn2);
			return isbns
		}
	}
	var code_html=txt;
	code_html=code_html.replace(/-/gi,"");
	var regexp=/[^i]([0-9]{13}|[0-9]{10}|[0-9]{9}[x])/gi;	
	var exp_filtre=(code_html.match(regexp)||[]);	
	for(var i=0;i<exp_filtre.length;i++){
		var isbn=exp_filtre[i];
		isbn=isbn.replace(/[^0-9x]/gi,"");
		if(isbn!=null&&!this.dedans(isbns,isbn)&&this.ISBNok(isbn)){
			isbns.push(isbn)
		}
	}
	return isbns
};