function checkVersion()
{
	var userAgent = window.navigator.userAgent.toLowerCase();
	var AppName = "";
	var Version = "";
	var Sys = "";
	if (userAgent.indexOf("msie")>-1) {
		AppName = "msie";	
		Version	= userAgent.replace(/.+msie/gi,"").replace(/;.+/gi,"") - 0;	
	} else if(userAgent.indexOf("firefox")>-1) {
		AppName = "firefox";
		Version = parseFloat(userAgent.replace(/.+firefox\//gi,"").replace(/\(.*\)/g,"")) - 0;
	} else if(userAgent.indexOf("netscape")>-1) {
		AppName = "netscape";
		Version = ParseFloat(userAgent.replace(/.+netscape\//gi,"").replace(/\(.*\)/g,"")) - 0;
	}

	if ((AppName == "netscape") || (AppName == "firefox" && Version < 1.5)) {
		return false;
	} 

	return true;
}

function login_check()
{
	if (checkVersion() == false) {
		alert("Unsupported Browser, Please upgrade to new version!");
		return false;
	}
	if (document.login.username.value=="") {
		alert("Enter your user name.");
		return false;
	} else if (document.login.username.value.length<1) {
		alert("Invalid user name, please re-enter.");
		return false;
	} else if (document.login.username.value.length>30) {
		alert("Invalid user name, please re-enter.");
		return false;
	} else if (document.login.password.value=="") {
		alert("Enter your password.");
		return false;
	} else if (document.login.password.value.length<2) {
		alert("Invalid password, please re-enter.");
		return false;
	} else if (document.login.password.value.length>18){
		alert("The length of password must not be longer than 18 characters.");
		return false;
	} else  {
		if (document.login.s_login.value == 1 || document.login.s_connect.value == 1) {
			document.login.action = 'https://mail.santaofood.com/cgi-bin/mailbox.cgi';
		} else {
			document.login.action = 'http://mail.santaofood.com/cgi-bin/mailbox.cgi';
		}
		return true;
	}
}

var username='';
var the_cookie=document.cookie;
var each_cookie=the_cookie.split('; ');  
for(var i=0;i<each_cookie.length;i++) {
    var  each_value=each_cookie[i].split('=');
    if(each_value[0]=='username')
        username=each_value[1];
}

function read_cookie()
{
    if (username.indexOf('%40') != -1) {
        var username_value=username.split('%40')
        document.login.username.value=username_value[0];
        document.login.mail_domain.value=username_value[1];
	}
}