[xwiki-users] Prototype errors

Hi, All, I got a lot of prototype problems as following which cause all the menus at the top are not functional correctly, when I use mouse highlight each menu, there are no sub menu items shown up. Such as Export, the Export as PDF and others do not show up. Sys is not defined }else{H.attachEvent("on"+E,F) prototype.js (line 2172) H.attachEvent is not a function }else{H.attachEvent("on"+E,F) prototype.js (line 2172) H.attachEvent is not a function }else{H.attachEvent("ondataavailable",F); prototype.js (line 2168) H.attachEvent is not a function }else{H.attachEvent("ondataavailable",F); prototype.js (line 2168) H.attachEvent is not a function I am using jquery like this: $xwiki.ssfx.use('JScripts/jQuery/slickgrid/css/smoothness/jquery-ui-1.8.16.custom.css', {'forceSkinAction' : true, 'language' : $context.language}) $xwiki.ssfx.use('JScripts/jQuery/slickgrid/examples.css', {'forceSkinAction' : true, 'language' : $context.language}) $xwiki.ssfx.use('JScripts/jQuery/slickgrid/jGrid_style.css', {'forceSkinAction' : true, 'language' : $context.language}) $xwiki.ssfx.use('JScripts/jQuery/slickgrid/slick.grid.css', {'forceSkinAction' : true, 'language' : $context.language}) <script type="text/javascript" src="/xwikim/bin/skin/resources/ JScripts/jQuery/slickgrid/lib/jquery-ui-1.8.16.custom.min.js"></script> <script type="text/javascript" src="/xwikim/bin/skin/resources/ JScripts/jQuery/slickgrid/lib/jquery.event.drag-2.0.min.js"></script> <script type="text/javascript" src="/xwikim/bin/skin/resources/ JScripts/jQuery/slickgrid/slick.core.js"></script> <script type="text/javascript" src="/xwikim/bin/skin/resources/ JScripts/jQuery/slickgrid/slick.editors.js"></script> <script type="text/javascript" src="/xwikim/bin/skin/resources/ JScripts/jQuery/slickgrid/slick.grid.js"></script> <script type="text/javascript" src="/xwikim/bin/skin/resources/ JScripts/jQuery/slickgrid/slick.formatters.js"></script> <script type="text/javascript" src="/xwikim/bin/skin/resources/ JScripts/jQuery/slickgrid/slick.dataview.js"></script> <script type="text/javascript" src="/xwikim/bin/skin/resources/JScripts/jGrid.js"></script> Does anybody have a clue why I go these kind of errors? Thanks Dave