var xmlHttp,usespan,url;

function GetXmlHttpObject(handler)
{ 
	var objXmlHttp=null;
	if (navigator.userAgent.indexOf("Opera")>=0){	
		alert("本系统不支持Opera！") ;
		return; 
	}
	if (navigator.userAgent.indexOf("MSIE")>=0){ 
		var strName="Msxml2.XMLHTTP";
		if (navigator.appVersion.indexOf("MSIE 5.5")>=0){	
			strName="Microsoft.XMLHTTP";
		}
		try	{
			objXmlHttp=new ActiveXObject(strName);
			objXmlHttp.onreadystatechange=handler;
			return objXmlHttp;
		} 
		catch(e){ 
			alert("有错误发生。ActiveX脚本调试可能被禁用了！");
			return;
		} 
	} 
	if (navigator.userAgent.indexOf("Mozilla")>=0){
		objXmlHttp=new XMLHttpRequest();
		objXmlHttp.onload=handler;
		objXmlHttp.onerror=handler; 
		return objXmlHttp;
	}
}

function GetAjaxGate(ajaxaction,myspan,boardid)
{
	//所有的ajax都用这个
	if (document.mxfyAjaxForm.ajaxaction.value!=ajaxaction||document.mxfyAjaxForm.myBoardID.value!=boardid){
		//赋值进去
		document.getElementById(myspan).innerHTML="<img src='../images/loading.gif'>";
		document.mxfyAjaxForm.ajaxaction.value=ajaxaction;
		document.mxfyAjaxForm.myBoardID.value=boardid;
		if(boardid==0){
			url="../bbs/mxfy_getboard.php?action="+ajaxaction;
		}else{
			url="../bbs/mxfy_getboard.php?action="+ajaxaction+"&myboardid="+boardid;
		}
		if(ajaxaction=="gwnews"){
			url="http://www.gwnews.net/mxfy.php";
		}
		usespan=myspan;
		xmlHttp=GetXmlHttpObject(doTransfer);
		xmlHttp.open("GET", url , true);
		xmlHttp.send(null);
	}
}

function doTransfer()
{ //写入span-innerHTML的程序
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){
		error_handle();
		var responseData=xmlHttp.responseText;
		document.getElementById(usespan).innerHTML=responseData;
	}
}

function error_handle()
{//错误处理
	switch(xmlHttp.status){
		case 404:
			//alert("服务器程序丢失，请检查！");
			//window.top.location="showerr.asp?ErrCodes=<Br>"+"<li>服务器程序丢失！&action=OtherErr";
			alert("服务器程序丢失，请检查！");
			//window.top.location=url;
			break;
		case 500:
			alert("服务器程序出错，请检查！");
			window.top.location="showerr.asp?ErrCodes=<Br>"+"<li>服务器程序出错！&action=OtherErr";
			break;
		case 403:
			alert("服务器禁止访问，请检查！");
			window.top.location="showerr.asp?ErrCodes=<Br>"+"<li>服务器禁止访问！&action=OtherErr";
			break;
		case 200:
			//正常处理
			break;		
		default:
			//正常处理
			break;
		}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function check(){
 if (document.LoginForm.UserName.value==""){
 alert("请输入社区密码!");
  LoginForm.UserName.focus();
 return false;
 }
 if (document.LoginForm.Password.value==""){
 alert("请输入社区密码!");
  LoginForm.Password.focus();
 return false;
 }
 if (document.LoginForm.GetCode.value==""){
 alert("请输入验证码!");
  LoginForm.GetCode.focus();
 return false;
 }
 return true;
}

//短信窗口
function openScript(url, width, height){
	var Win = window.open(url,"openScript",'width=' + width + ',height=' + height + ',resizable=1,scrollbars=yes,menubar=no,status=no' );
}

function ChangeForm(actiontype)
{
//改变搜索链接
	var objForm=document.getElementById("QueryForm");
	var objElement =document.getElementById("HiddenElement");
	var objElement2 =document.getElementById("HiddenElement2");
	switch(actiontype){
		case "1":
			objForm.action="http://www.mxfy.com/bbs/search.php";
			objElement.name="BoardID";
			objElement.value=0;
			objElement2.name="sType";
			objElement2.value=2;
			break;
		case "2":
			objForm.action="http://www.mxfy.com/bbs/search.php";
			objElement.name="selecttype";
			objElement.value="topic";
			break;
		case "3":
			objForm.action="http://www.mxfy.com/bbs/search.php";
			objElement.name="BoardID";
			objElement.value=94;
			objElement2.name="sType";
			objElement2.value=2;
			break;
		case "4":
			objForm.action="http://www.mxfy.com/bbs/search.php";
			objElement.name="BoardID";
			objElement.value=31;
			objElement2.name="sType";
			objElement2.value=2;
			break;	
		case "5":
			objForm.action="http://www.mxfy.com/bbs/search.php";
			objElement.name="BoardID";
			objElement.value=0;
			objElement2.name="sType";
			objElement2.value=1;
			break;
		case "6":
			objForm.action="http://www.mxfy.com/bbs/search.php";
			objElement.name="so";
			objElement.value=objForm.KeyWord.value;
			objElement2.name="site";
			objElement2.value="";
			break;
		default:
			alert('发生了未知错误');
			break;
		}
}

function CheckSearchForm()
{
	//检查搜索表单
	if (document.QueryForm.KeyWord.value==""){
		alert('请输入搜索内容');
		document.QueryForm.KeyWord.focus();
		return false;}
	var objForm=document.getElementById("QueryForm");
	if (String(objForm.action)==""){
		ChangeForm("1");}
	return true;
}