function checkLoginForm(myform){
    if (myform.loginName.value == "") {
        alert("请输入登录名!");
        myform.loginName.focus();
        return;
    }
    if (myform.passwd1.value == "") {
    	alert("请输入密码！");
    	myform.passwd1.focus();
    	return;
    }
    myform.passwd.value = calcMD5(myform.passwd1.value);
	myform.submit();

    return;
}

function checkFormEmail(myform){
	    if (myform.email.value == "") {
     alert("请输入电子邮箱!");
     myform.email.focus()
     return false;
    }

	checkOK = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_@.";
	checkStr = myform.email.value;
	allValid = true;
	for (i = 0;  i < checkStr.length;  i++)
	{
		ch = checkStr.charAt(i);
		for (j = 0;  j < checkOK.length;  j++)
		if (ch == checkOK.charAt(j))
			break;
		if (j == checkOK.length)
		{
			allValid = false;
			break;
		}
	}

	if (myform.email.value.length < 6)
		allValid = false;

	if (!allValid)
	{
		alert("您输入的电子邮箱长度不够!");
		myform.email.focus();
		return (false);
	}

	var address1=myform.email.value;
    if(address1.length>0)
	{
        i=address1.indexOf("@");
        if(i==-1)
		{
			window.alert("您输入的电子邮箱是格式错误！")
			myform.email.focus();
			return false
        }
       ii=address1.indexOf(".")
        if(ii==-1)
		{
			window.alert("您输入的电子邮箱是格式错误！")
			myform.email.focus();
			return false;
        }

    }
	if (checktext(myform.email.value))
	{
		alert("您输入的电子邮箱是格式错误！");
		myform.email.select();
		myform.email.focus();
		return (false);
	}
 return true;
}