If the user wants to download the image, he will click the download icon. In that,

var fileRef:FileReference = new FileReference();
var loadmc:MovieClip;
download_mc.onPress = function()
{
    var listener:Object = new Object();
    listener.onProgress = function(file:FileReference, bytesLoaded:Number, bytesTotal:Number):Void
    {
        loadmc.status_txt.text = (Math.abs(bytesLoaded / bytesTotal)*100) +"%"
    }
    listener.onComplete = function(file:FileReference):Void {
        loadmc.removeMovieClip();
        getURL("javascript:alert(' Download Completed ');");
    }
    listener.onHTTPError = function(file:FileReference):Void {
        loadmc.removeMovieClip();
        getURL("javascript:alert('" + "ComonHTTPErrorplete: " + file.name + "');");
    }
   
    listener.onIOError = function(file:FileReference):Void {
        loadmc.removeMovieClip();
        getURL("javascript:alert('" + "IOError: " + file.name + "');");
    }
   
    listener.onSecurityError = function(file:FileReference, errorString:String):Void {
        getURL("javascript:alert('" + "SecurityError: " + file.name + "');");
    }
    listener.onOpen = function(file:FileReference):Void {
        loadmc = _root.fullImg_mc.attachMovie("progress_mc","loadingmc",0);
        loadmc._x = 0;//(_root.fullImg_mc._x)+(_root.fullImg_mc._width/2);
        loadmc._y = 0;//(_root.fullImg_mc._y)+(_root.fullImg_mc._height/2);
    }
    listener.onCancel = function(file:FileReference):Void {
        loadmc.removeMovieClip();
        trace("onCancel");
    }
    fileRef.addListener(listener);
    var filename = _root.img_arr[temptot] + ".jpg";
    var url:String = "images/"+filename;
    fileRef.download(url,filename);
};

Which makes me to download the single image. What i need now is to download the multiple image.

Is there any option to zip all the file ...? and download....?

Give me some idea and hints