function navslip(nid,cid){ $(nid).mouseover(function(){ //alert(123); $(cid).css("display","block"); }); $(nid).mouseout(function(){ $(cid).css("display","none"); }); } $(document).ready(function(){ navslip("#introduction_box","#introduction_ul"); navslip("#organization_box","#organization_ul"); navslip("#thingking_box","#thingking_ul"); navslip("#education_box","#education_ul"); navslip("#zsjy_box","#zsjy_ul"); navslip("#science_box","#science_ul"); navslip("#train_box","#train_ul"); navslip("#cooperation_box","#cooperation_ul"); navslip("#information_box","#information_ul"); navslip("#service_box","#service_ul"); navslip("#hdjl_box","#hdjl_ul"); navslip("#wx","#wx_box"); //navslip("#wb","#wb_box"); });