Hello, when adding a rich:suggestionbox to a page I get following javascript error (and the suggestionbox does not work).
Please advise as soon as possible.

Error:
Element.hide is not a function
Base("form1:lastNameInput1", "form1:suggestionBoxId", Object ignoreDupResponses=true usingSuggestObjects=false)suggestionbox.js (line 15)
initialize("j_id_jsp_456141349_0", "form1", "form1:lastNameInput1", "form1:suggestionBoxId", null, Object ignoreDupResponses=true usingSuggestObjects=false)suggestionbox.js (line 92)
klass()a4j_3_2_0.SR1-SNA... (line 5)
(?)()applicationsInqui... (line 1110)
activatePolling("form1:lastNameInput1", function())available.js (line 9)
applicationsInquiry.jsp()applicationsInqui... (line 1110)
[Break on this error] this.observerHandle=null;this.element.setAttribute('autocomplete','off');Element...