<select class="easyui-combobox" panelHeight="auto" style="width:195px" data-options="required:true,valueField:'id',textField:'text'
  ,
      onSelect:function(){
        var varSelect = $('#WKBgjffs').combobox('getText'); 
        if(varSelect=='固定交付 网络下载报告'||varSelect=='固定交付'||varSelect=='固定交付+网络下载报告')
        {
          $('#WKGdjfdz').combobox('enable'); //设置下拉框可编辑
        } 
        else if(varSelect!='固定交付 网络下载报告'&&varSelect!='固定交付'&&varSelect!='固定交付+网络下载报告'){

           $('#WKGdjfdz').combobox('disable'); //设置下拉框不可编辑
        }
  }
  " id=WKBgjffs>
  <%=options_bgjffs%>
</select>

<select class="easyui-combobox" panelHeight="auto" style="width:450px" data-options="valueField:'id',textField:'text'" id="WKGdjfdz">
  <option value="">------ 无 ------</option>
  <%=options_gdjfdz%>
</select>