function changeSelect(selectId) {
                var selObj = document.getElementById(selectId);
                //read the response send by server
                var xmldoc=getResponse('xml');

                if (!xmldoc) return false;

                var opts = xmldoc.getElementsByTagName('options')[0];
               if (!opts) {
                    selObj.length=0;
                    selObj[0]=new Option('--eroare--','-1');
                    alert('Fisierul XML rezultat contine erori (nu este corect formatat / contine caractere nepermise)');
                    return false;
                }
                var elems = opts.getElementsByTagName('option');

                //remove all element from select given
                selObj.length=0;
                var val=-1;
                var txt='error';
                var opt;
                for(i=0;i<elems.length;i++) {
                    val=elems[i].getAttribute("value");
                    txt=elems[i].getAttribute("text");
                    selObj[i]=new Option(txt,val);
                }
             }

             function showInfo(divId) {
                var divObj = document.getElementById(divId);
                var txtDoc=getResponse('text');
                if (!txtDoc) return false;
                divObj.innerHTML=txtDoc;
             }

             function removeInfo(divId) {
                var divObj = document.getElementById(divId);
                divObj.innerHTML='<i>alegeti o colectie</i>';

             }