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i=0;i<aa.length;i++){if(aa[i].tagName=="A"&&aa[i].qmibullet)qm_ibullets_position(aa[i],aa[i].qmibullet);}}}/* ]]> */</script> <script type="text/javascript">/* <![CDATA[ */if(!qmad.sopen){qmad.sopen=new Object();qmad.sopen.log=new Array();if(window.attachEvent)window.attachEvent("onload",qm_sopen_init);else if(window.addEventListener)window.addEventListener("load",qm_sopen_init,1);};function qm_sopen_init(e,go){if(window.qmv)return;if(!go){setTimeout("qm_sopen_init(null,1)",10);return;}var auto_close=false;var i;var ql=qmad.sopen.log;for(i=0;i<10;i++){var a;if(a=document.getElementById("qm"+i)){var ss=qmad[a.id];if(ss&&!ss.showload_active)continue;if(ss&&ss.showload_auto_close)auto_close=true;var dd=a.getElementsByTagName("DIV");for(var j=0;j<dd.length;j++){if(dd[j].idiv&&dd[j].idiv.className.indexOf("qm-startopen")+1){ql.push(dd[j].idiv);var f=dd[j][qp];if(!qm_a(f)){var b=false;for(var k=0;k<ql.length;k++){if(ql[k]==f.idiv)ql[k]=null;}ql.push(f.idiv);f=f[qp];}}}}}var se=0;var sc=0;if(qmad.tree){se=qmad.tree.etype;sc=qmad.tree.ctype;qmad.tree.etype=0;qmad.tree.ctype=0;}for(i=ql.length-1;i>=0;i--){if(ql[i]){qm_oo(new Object(),ql[i],1);if(!auto_close)qm_li=null;}}if(qmad.tree){qmad.tree.etype=se;qmad.tree.ctype=sc;}}/* ]]> */</script> </head> <body> <center> <div id="body_bg"> <div id="body_all"> <div id="banner"></div> <div id="body_nv"> <div class="nv_div"> <a href="/index">首页</a> | <a href="HostIntroduce.html">主持人介绍</a> | <a href="TheoryCourse.html">理论教学</a> | <a href="SpreakTeacher.html">主讲教师</a> | <a href="TeacherTroops.html">教师队伍</a> | <a href="CourseDescribe.html">课程描述</a> | <a href="CourseEvaluation.html">课程评价</a> | <a href="CourseBuild.html">课程建设</a> |<a href="Measures.html">措施与鉴定</a> | <a style="width:110px;" href="/yaoxue/ExamingLogin.jsp">在线练习与考试</a> </div> </div> <div id="body_main"> <div class="body_left wai_border"> <div class="left_title"><img src="images/kcpj.gif"/></div> <div class="left_content"> <div> <!--以下是树状菜单==================================================================================== --> <ul id="qm0" class="qmmc"> <li><a class="qmparent" href="javascript:chageIframe('CourseEvaluationAction?hostIntroduce.infor_id=16')">本课程的主要特色</a> <ul> </ul> </li> <li><a class="qmparent" href="javascript:chageIframe('CourseEvaluationAction?hostIntroduce.infor_id=17')">与国内外同类课程相比所处的水平</a> <ul> </ul> </li> <li><a class="qmparent" href="javascript:chageIframe('CourseEvaluationAction?hostIntroduce.infor_id=18')">目前还存在的不足</a> <ul> </ul> </li> </ul> <script type="text/javascript">qm_create(0,true,0,500,'all',false,false,false,false);</script> <!-- =============================================菜单项到此结束========================================================== --> </div> </div> </div> <div class="body_right wai_border"> <div id="shipin" style="display:block"> <iframe id="myIframe" name="myIframe" frameBorder=0 marginwidth=0 marginheight=0 scrolling=no width="100%" onload="iframeFitHeight(this)"> </iframe> </div> </div> </div> <div id="footer_f"></div> </div> </div> </center> </body> </html>上面是整个页面的代码，其实单单对于Ifram的使用，只需要：
<iframe id="myIframe" name="myIframe" frameBorder=0 marginwidth=0 marginheight=0 scrolling=no width="100%" onload="iframeFitHeight(this)"> </iframe>
这里要注意的就是必须要指定一个id，用来唯一标示这个标签，然后就是一些页面参数的设置，
我们在使用Iframe时一般都是和js一起使用的，通过js来与后台进行交互：
<script type="text/javascript"> window.onload = function(){//页面一打开就加载一个ppt播放 document.getElementById("myIframe").src ='CourseEvaluationAction?hostIntroduce.infor_id=16'; } </script> <script type="text/javascript"> function chageIframe(url){//该js控制Iframe加载的网页 var urlValue = url; document.getElementById("myIframe").src = urlValue; } </script>上面的代码表示，当页面加载完成后，就立即与后台交互，然后将后台返回的页面加载到指定id的Iframe标签中，然后给左边的导航栏添加点击事件chageIframe(url)，
这样每次点击后后台都将返回指定的页面，返回页面可以放在webRoot下的任何位置，程序会自动将给页面加载到Iframe标签中的，很简单的吧！！！
现在大家应该明白为什么我一开始说这个叫做伪Ajax了吧，因为在客户端看来是实现了局部的刷新，但实际上请求后台后返回的还是整个页面，只是我们使用了Iframe标签
在目标页面中指定了一块大小的位置，然后将返回的页面进行加载；
这里还要补充的一点是：对Iframe标签进行自适应长度，因为在一开始我们可能并不知道后台返回的数据有多大，需要多长的页面控制，因此需要设定自适应来适应后台数据
的大小，下面用js来实现自适应：
function iframeFitHeight(oIframe) { try { var oWin = oIframe.name ? window.frames[oIframe.name] : oIframe.contentWindow; oIframe.style.height = oWin.document.body.scrollHeight + "px"; } catch(e){} }