function changInputType(obj,value){
	if(value == ''&&(obj.value== '用户名为身份证号码'||obj.value=='初始密码为123456')){
		obj.value='';
		obj.style.color = "#000";
	}else if(value == ''){
		obj.select();
	}else if(obj.value == '' && value != ''){
		obj.style.color = "#C6C6C6";
		obj.value = value;
	}
	
}

function check_login(){
if(document.getElementById('authKeyImagPanel').style.display == 'block'){
	document.getElementById('loginfrm').submit();
}else{
	var url = "/study/login.php";
	var act = 'AjaxLogin';
}
var username = jQuery('#username').val();
var password = jQuery('#passwd').val();
var authKey = jQuery('#authKey').val();
var islogin = 0;
if(jQuery('#is_save_user').attr("checked")=='checked') islogin = 1;
jQuery.post(url,{act:act,username:username,password:password,islogin:islogin,authKey:authKey},function(data){
	if(data.success == 1){
		/*if($('#is_save_user').attr("checked")=='checked'){
			$.cookie('islogin',1,{expires: 30, path: '/', domain: 'learning.com', secure: true});
		}else{
			$.cookie('islogin',0,{expires: 30, path: '/', domain: 'learning.com', secure: true});
		}*/
		
		//var strHtml = '<p style="padding:8px 0;">欢迎你！<span>'+data.studentname+'</span> '+data.sex_call+'</p><p style="height:40px;"><a href="/study/"><img src="/html/'+data.theme+'/images/login_ok.gif"/></a><a href="/study/login.php?act=Logout" onclick="return confirm(\'确定退出登录?\');"><img src="/html/'+data.theme+'/images/back.gif" class="ml6"  /></a></p>';
		//jQuery('#login_div').html(strHtml);
		
		window.location.href= data.domain;
	}else{
		alert(data.error);
	}
},'json');

}
function setTab(m,n){
	 var tli=document.getElementById("hot_class_title"+m).getElementsByTagName("li");
	 var mli=document.getElementById("hot_class"+m).getElementsByTagName("ul");
	 for(i=0;i<tli.length;i++){
	  tli[i].className=i==n?"hover":"";
	  mli[i].style.display=i==n?"block":"none";
	 }
	}
	
	
function setTabTop(m,n,type){
	 var tli=document.getElementById("hot_class_title"+m).getElementsByTagName("li");
	 var mli=document.getElementById("hot_class"+m).getElementsByTagName("ul");
	 for(i=0;i<tli.length;i++){
	  tli[i].className=i==n?"hover":"";
	  mli[i].style.display=i==n?"block":"none";
	 }
	 if(type == 'branch'){
	 	document.getElementById('toplink').innerHTML = '<a href="/top/index.php?act=topBranch" target="_blank">more</a>';
	 }else if(type == 'course'){
		 document.getElementById('toplink').innerHTML = '<a href="/top/index.php?act=topCourse" target="_blank">more</a>';
	 }
	}
jQuery.cookie = function(name, value, options) {
    if (typeof value != 'undefined') { // name and value given, set cookie
        options = options || {};
        if (value === null) {
            value = '';
            options.expires = -1;
        }
        var expires = '';
        if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
            var date;
            if (typeof options.expires == 'number') {
                date = new Date();
                date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
            } else {
                date = options.expires;
            }
            expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
        }
        var path = options.path ? '; path=' + options.path : '';
        var domain = options.domain ? '; domain=' + options.domain : '';
        var secure = options.secure ? '; secure' : '';
        document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
    } else { // only name given, get cookie
        var cookieValue = null;
        if (document.cookie && document.cookie != '') {
            var cookies = document.cookie.split(';');
            for (var i = 0; i < cookies.length; i++) {
                var cookie = jQuery.trim(cookies[i]);
                // Does this cookie string begin with the name we want?
                if (cookie.substring(0, name.length + 1) == (name + '=')) {
                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                    break;
                }
            }
        }
        return cookieValue;
    }
};