I'm trying to do this http://jqueryui.com/autocomplete/#combobox The problem is that when I go with the mouse over an option, options will disappears and it cames out the advice: "x didn't match any item" where x are the letters that I wrote in the combobox. 

this is my select (builded with JSP)

 <select id="combobox"><option value="">Select one...</option> <%for(int i=0;i<ut.size();i++){ out.print("<option value=\""+ut.get(i).getIdUtente()+ "\">"+ut.get(i).getNome()+" "+ut.get(i).getCognome()+" ("+ut.get(i).getIdUtente()+")"+"</option>"); } %> </select>

Now, where is my problem? thanks in advance!