主要函数:
复制代码 代码如下:
<!--
functiongetObject(objectId){
if(document.getElementById&&document.getElementById(objectId)){
//W3CDOM
returndocument.getElementById(objectId);
}
elseif(document.all&&document.all(objectId)){
//MSIE4DOM
returndocument.all(objectId);
}
elseif(document.layers&&document.layers[objectId]){
//NN4DOM..note:thiswon'tfindnestedlayers
returndocument.layers[objectId];
}
else{
returnfalse;
}
}

varresponsecont;
varxmlHttp;
varrequestType;
varnewsstring;

functionCreateXMLHttpRequest(){
//InitializeMozillaXMLHttpRequestobject
if(window.XMLHttpRequest){
xmlHttp=newXMLHttpRequest();
}
//InitializeforIE/WindowsActiveXversion
elseif(window.ActiveXObject){
try{
xmlHttp=newActiveXObject("Msxml2.XMLHTTP.3.0");
}
catch(e){
try{
xmlHttp=newActiveXObject("Microsoft.XMLHTTP");
}
catch(e){newsstring="<divclass='loading'>Loadingrquestcontentfail,Pleasetryitagainlatter...</div>";}
}
}
}

functiongetnews(tagid,x){
varurl=tagid+'_'+x+'.htm';
varloadstatustext="<divclass='loading'><imgsrc='images/loading.gif'/>Loadingrequestcontent,pleasewait...</div>";
requestType=tagid;
CreateXMLHttpRequest();

getObject(requestType+'_cnt').innerHTML=loadstatustext;
xmlHttp.onreadystatechange=processRequestChange;
xmlHttp.open("GET",url,true);
xmlHttp.setRequestHeader("If-Modified-Since","0");
xmlHttp.send(null);
}

functionprocessRequestChange(){
//onlyifxmlHttpshows"complete"
if(xmlHttp.readyState==4){
//onlyhttp200toprocess
if(window.location.href.indexOf("http")==-1||xmlHttp.status==200){
newsstring=xmlHttp.responseText;
//injectcententtotab-pane
shownews(requestType,newsstring);
}
}
}

functionshownews(requestType,newsstring){
//<![CDATA[
responsecont=getObject(requestType+'_cnt');
responsecont.innerHTML=newsstring;
//]]>
}

functionTabNews(tagid,x){
for(vari=1;i<=7;i+=2){
if(i==x){
getObject(tagid+i).className="tabactive"+i;
if(i!=1){
getObject(tagid+(i-1)).style.display="none";
if(i!=7){
getObject(tagid+(i+1)).style.display="none";
}
}
if(i==1){
getObject(tagid+"2").style.display="none";
}
try{
getnews(tagid,i);
}
catch(e){
alert(e);
}
}
else
{
getObject(tagid+i).className="";
if(i!=7){
getObject(tagid+(i+1)).style.display="block";
}
}
}
}
//-->


调用方法:
复制代码 代码如下:<listyle="cursor:pointer"id="tab3"onclick="TabNews('tab',3)">最新折扣信息</li>