how to chek the adobe illustrator document version.

owh dear

var v_fl = "/d/_temp/3ds_eles_msh.ai"

function getFileVersion(v_flToOpen){
    var v_fileObj = new File(v_flToOpen);
    var vrs = null;
    v_fileObj.open("r");

    try{
        while(v_fileObj.tell() < v_fileObj.length) {
            var line = v_fileObj.readln();
            //alert(line.reflect.methods);
            var idxOf = line.indexOf("Creator: Adobe Illustrator(R)");
            if(idxOf > 0) { vrs = line.substring(idxOf+30, line.length);}
        }
    }
    catch(ex) { alert("There is some sort of strange error ... damn, and all was going so well");}
    finally { v_fileObj.close(); return vrs; }

}

var v_fileVersion = getFileVersion(v_fl);

if(v_fileVersion != null) {

     alert("Version of the file is:" + v_fileVersion);

} else {

     alert("Now seriously did you really selected an .ai file? If so, something strange happened!");

}

cheers;