function check(obj){ 
var url="" 
var lname=obj.LoginName.value 
var lpass=obj.passwd.value 
var lindex=obj.domain.selectedIndex 
if(lname==""){alert("请输入帐号！");return false} 
else if(lpass==""){alert("请输入密码！");return false} 
else if(lindex==0){alert("请选择邮箱！");return false} 
else if(lindex<16){ 
if(lindex==1) url="http://bjweb.mail.tom.com/cgi/login2?user="+lname+"&pass="+lpass 
if(lindex==2) url="http://entry.126.com/cgi/login?user="+lname+"&pass="+lpass 
if(lindex==3) url="http://reg4.163.com/in.jsp?url=http://reg4.163.com/EnterEmail.jsp?&username="+lname+"&password="+lpass 
if(lindex==4) url="http://login.mail.sohu.com/chkpwd.php?UserName="+lname+"&Password="+lpass+"&domain=sohu.com" 
if(lindex==5) url="http://mail.sina.com.cn/cgi-bin/login.cgi?u="+lname+"&psw="+lpass 
if(lindex==6) url="http://freemail.cnool.net/cgi-win/login.cgi?username="+lname+"&password="+lpass 
if(lindex==7) url="http://mail.2911.net/cgi-bin/mail/main.pl?LOGIN=Log+In&USERNAME="+lname+"&PASSWORD="+lpass
if(lindex==8) url="http://mail.citiz.net/default/login_billing.jsp?username="+lname+"&password="+lpass 
if(lindex==9) url="http://mail.diyserver.net/login.php?login=1&username="+lname+"&password="+lpass 
if(lindex==10) url="http://edit.bjs.yahoo.com/config/login?login="+lname+"&passwd="+lpass+"&.src=ym" 
if(lindex==11) url="http://mailgate.hongen.com.cn/mail/login?user="+lname+"&passwd="+lpass 
if(lindex==12) url="http://vip.avl.com.cn/mail/gznet_login.jsp?userid="+lname+"&passwd="+lpass+"&ac=mail" 
if(lindex==13) url="http://wm2.fescomail.net/cgi-bin/webmail?username="+lname+"&password="+lpass 
if(lindex==14) url="http://mail.jzteyao.com.cn/cgi-bin/mail/main.pl?USERNAME="+lname+"&PASSWORD="+lpass+"&LOGIN=Log+In" 
if(lindex==15) url="http://freemail.soim.com/cgi-win/login.cgi?username="+lname+"&password="+lpass
open(url) 
} 
else{ 
if(lindex==16){ 
obj.action="http://61.136.62.69/cgi-bin/login" 
obj.PassWord.value=lpass 
} 
if(lindex==17){ 
obj.action="http://mail.ywzc.net/default.asp" 
obj.username.value=lname 
obj.Password.value=lpass 
} 
if(lindex==18) obj.action="http://webmail.21cn.com/NULL/NULL/NULL/NULL/NULL/SignIn.gen" 
if(lindex==19) obj.action="http://freemail.china.com/extend/gb/NULL/NULL/NULL/SignIn.gen" 
obj.submit() 
} 
obj.passwd.value="" 
return false 
} 


function ResumeError() { 
return true; 
} 
window.onerror = ResumeError; 

function $(id) {
    return document.getElementById(id);
}
// 相对尺寸
function GetOffsetTop (el, p) {
    var _t = el.offsetTop;
    var _p = el.offsetParent;

    while (_p) {
        if (_p == p) break;
        _t += _p.offsetTop;
        _p = _p.offsetParent;
    }

    return _t;
};
function GetOffsetLeft (el, p) {
    var _l = el.offsetLeft;
    var _p = el.offsetParent;

    while (_p) {
        if (_p == p) break;
        _l += _p.offsetLeft;
        _p = _p.offsetParent;
    }

    return _l;
};
function showMenu (baseID, divID) {
    baseID = $(baseID);
    divID  = $(divID);

    //var l = GetOffsetLeft(baseID);
    //var t = GetOffsetTop(baseID);

    //divID.style.left = l + 'px';
//    divID.style.top = t + baseID.offsetHeight + 'px';
    if (showMenu.timer) clearTimeout(showMenu.timer);
	hideCur();
    divID.style.display = 'block';
	showMenu.cur = divID;

    if (! divID.isCreate) {
        divID.isCreate = true;
        //divID.timer = 0;
        divID.onmouseover = function () {
            if (showMenu.timer) clearTimeout(showMenu.timer);
			hideCur();
            divID.style.display = 'block';
        };

        function hide () {
            showMenu.timer = setTimeout(function () {divID.style.display = 'none';}, 1000);
        }

        divID.onmouseout = hide;
        baseID.onmouseout = hide;
    }
	function hideCur () {
		showMenu.cur && (showMenu.cur.style.display = 'none');
	}
}


function doClick_menu (o) {
	o.className = 'menu_gg';
	var j, id, e;
	for (var i = 1; i <= 8; i++) {
	    id = 'menu' + i;
	    j = document.getElementById(id);
	    e = document.getElementById('menu_con' + i);
	    if (id != o.id) {
	   	   j.className = '';
	   	   e.style.display = 'none';
	    }
        else {
		    e.style.display = 'block';
	    }
	 }
     var url = '';
     switch (o.innerHTML) {
        case '网上政务':
            url = '/Article/Search.asp?Field=Title&keyword=';
            break;
        case '科研课题':
            url = '/Scientific/Search.asp?Field=Title&keyword=';
            break;
        case '课程改革':
            url = '/Curricula/Search.asp?Field=Title&keyword=';
            break;
        case '高考中考':
            url = '/Exam/Search.asp?Field=Title&keyword=';
            break;
        case '资源下载':
            url = '/Soft/Search.asp?Field=Title&keyword=';
            break;
        case '图片素材':
            url = '/Photo/Search.asp?Field=Title&keyword=';
            break;
        case '教师园地':
            url = '/Teacher/Search.asp?Field=Title&keyword=';
            break;
        case '学生天地':
            url = '/Student/Search.asp?Field=Title&keyword=';
            break;
     }
     doClick_submit.url = url;
}
doClick_submit.url = '/Search.asp?Field=Title&keyword=';
function doClick_submit () {
    var keyword = document.getElementsByName('keyword')[0].value;
    window.open(doClick_submit.url + keyword);
}
window.onload = function (){
	var keyword = document.getElementsByName('keyword')[0];
	keyword.onkeydown = function (e) {
		e = e || window.event;
		if (e.keyCode == 13) {
			doClick_submit();
		}
	};
}