无闪烁定时刷新页面（菜鸟一枚，求大神指教）

Question

我的代码如下：

                                     <div class=position:absolute; >                            
                                         <input value="${xtjcBhDevice.devName }" readonly class=text>
                                     </div>
                           </div>
                        </c:if>


                        <c:if test="${xtjcBhDevice.timecha<=3 }" >
                            <c:if test="${xtjcBhDevice.devpro ==1 }">
                               <div class= position:relative >
                                    <div class=position:absolute;>                      
                                         <img src="/gcxmgl_v0.1/resources/images/xtjcbh_produce.png" class=imgstyle />
                                    </div>  
                                         <div class=position:absolute; >                            
                                             <input value="${xtjcBhDevice.devName }" readonly class=text>
                                         </div>
                               </div>
                             </c:if>


                           <c:if test="${xtjcBhDevice.devpro ==0 }" >
                              <div class= position:relative  >
                           <div class=position:absolute;>  
                                <img src="/gcxmgl_v0.1/resources/images/xtjcbh_Online.png" class=imgstyle /> 
                              </div>
                              <div class=position:absolute; > 
                                  <input value="${xtjcBhDevice.devName } " readonly class=text >
                               </div>   
                               </div>                               
                            </c:if>

                        </c:if>  
                     </div  >  
                     </c:forEach>
                </c:if>

              </div>
        </div>
    </div>