function init(){
	MM_preloadImages('images/butn01-1.gif','images/butn02-1.gif','images/butn03-1.gif');
	getLoginBlock();
	if($("CERT_VENDER_ID")) getVender();
	else if($("COURSE_CAT_ID")) getSubList("COURSE_CAT_ID",0);
}

function getLoginBlock(){
	var url="../include/asp/login.asp";
	var pars="level=1";
	var myAjax=new Ajax.Updater(
			{success: "login_block"},
			url, 
			{
				method: "post", 
				parameters: pars,
				onFailure: rptErr,
				evalScripts: true
			});
}

function trim(theString){
	while(theString.substr(0,1)==" ")
		theString=theString.substr(1);

	while(theString.substr(theString.length-1,1)==" ")
		theString=theString.substr(0,theString.length-1);

	return theString;
}

function sendLoginReq(act){
	var url="../include/asp/login.asp";
	var pars="level=1&act="+act;
	if(act==1){
		var msg="";
		var j=0;
		var acnt=$F("ALLY_ACNT");
		var pwd=$F("ALLY_PWD");
		acnt=trim(acnt);
		pwd=trim(pwd);
		msg+=acnt==""?(++j)+". 请输入您的帐号\n":"";
		msg+=pwd==""?(++j)+". 请输入您的密码\n":"";
		if(msg!=""){
			alert(msg);
			return false;
		}

		pars+="&"+Form.serialize("LOGIN_FORM");
	}
	var myAjax=new Ajax.Updater(
			{success: "login_block"},
			url, 
			{
				method: "post", 
				parameters: pars,
				onFailure: rptErr,
				evalScripts: true
			});
}

function rptErr(theReq){
	//alert("Error occured !");
	document.write(theReq.responseText);
}

function clearMsg(){
	if($("login_msg")) Element.hide("login_msg");
}

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 getVender(){
	Element.update('VENDER_BRIEF',"");
	var url="../include/asp/getVender.asp";
	var pars="";
	var myAjax=new Ajax.Request(
			url, 
			{
				method: "post", 
				parameters: pars,
				onFailure: rptErr,
				onComplete: setVender
			});
}

function setVender(theReq){
	var arySubListHash=eval(theReq.responseText);
	if(arySubListHash[0].value=="Database connecting failed."){
		location.href=("../error/?id=1");
		return;
	}
	var targetList=$("CERT_VENDER_ID");
	targetList.length=arySubListHash.length;
	for(i=0;i<targetList.length;i++){
		targetList.options[i]=new Option(arySubListHash[i].text,arySubListHash[i].value);
		if($("CURR_CERT_VENDER_ID")) targetList.options[i].selected=targetList.options[i].value==$F("CURR_CERT_VENDER_ID");
	}
	getSubList("COURSE_CAT_ID",$("CERT_VENDER_ID").value);
	if(targetList.options[0].value!=""){
		Element.update('VENDER_TITLE',targetList.options[0].text);
		getBrief("VENDER_BRIEF",targetList.options[0].value);
	}
}

function getSubList(theList,theID){
	Element.update('COURSE_BRIEF',"");
	var url=theList=="COURSE_CAT_ID"?"../include/asp/getCourseCat.asp":"../include/asp/getCourse.asp";
	var pars="id="+theID;
	var myAjax=new Ajax.Request(
			url, 
			{
				method: "post", 
				parameters: pars,
				onFailure: rptErr,
				onComplete: setSubList
			});
}

function setSubList(theReq){
	var arySubListHash=eval(theReq.responseText);
	if(arySubListHash[0].value=="Database connecting failed."){
		location.href=("../error/?id=1");
		return;
	}
	var objCourse=$("COURSE_ID"),objCourseCat=$("COURSE_CAT_ID");
	var isCourseCat=arySubListHash[0].text.indexOf("认证课程分类")!=-1;
	var targetList=isCourseCat?objCourseCat:objCourse;
	targetList.length=arySubListHash.length;
	for(i=0;i<targetList.length;i++){
		targetList.options[i]=new Option(arySubListHash[i].text,arySubListHash[i].value);
		if($("CURR_COURSE_CAT_ID")){
			targetList.options[i].selected=targetList.options[i].value==(isCourseCat?$F("CURR_COURSE_CAT_ID"):$F("CURR_COURSE_ID"));
		}
	}
	if(isCourseCat) getSubList("COURSE_ID",$("COURSE_CAT_ID").value)
	else{
		if(targetList.selectedIndex!=0) getBrief('c',targetList.value);
	}
}

function getBrief(theTarget,theCourseID){
	var url="../include/asp/getBrief.asp";
	var objDiv=theTarget=="c"?"COURSE_BRIEF":"VENDER_BRIEF";
	var pars="id="+theCourseID+"&trg="+theTarget;
	var myAjax=new Ajax.Updater(
			{success: objDiv},
			url, 
			{
				method: "post", 
				parameters: pars,
				onFailure: rptErr,
				evalScripts: true
			});
}

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];}
}

window.onload=init;