function makelink(url, filedescr)
{
    if(url.length>0 && filedescr.length>0)
    {
        dotpos = url.lastIndexOf(".");
        slashpos = url.lastIndexOf("/");

        ext = url.substr(dotpos+1, url.length - dotpos - 1);    

        document.write("<table style='width:150px'><tr><td><div style='text-align: center'><A HREF='"+url+"'><IMG src='/fileadmin/template/fileext_img/"+ext+".png' /></a></div></td></tr>"
                +"<tr><td><p class='bodytext' style='text-align: center'><A HREF='"+url+"'>"+filedescr+"</A></p></td></tr></table>");
    }
}