function check(theForm)
{
if (theForm.jmeno.value == "") {
window.alert("Enter Name, please.");
return false;
}
if (theForm.adresa1.value == "") {
window.alert("Enter Address1, please.");
return false;
}
if (theForm.mesto.value == "") {
window.alert("Enter City, please.");
return false;
}
if (theForm.zeme.value == "") {
window.alert("Enter Country, please.");
return false;
}
if (theForm.email.value == "") {
window.alert("Enter Email, please.");
return false;
}
if (theForm.email.value == "@") {
window.alert("Enter Email, please.");
return false;
}
// test if valid email address, must have @ and .
var checkEmail = "@.";
var checkStr = theForm.email.value;
var EmailValid = false;
var EmailAt = false;
var EmailPeriod = false;
for (i = 0;  i < checkStr.length;  i++)
{
	ch = checkStr.charAt(i);
	for (j = 0;  j < checkEmail.length;  j++)
	{
		if (ch == checkEmail.charAt(j) && ch == "@")
			EmailAt = true;
		if (ch == checkEmail.charAt(j) && ch == ".")
			EmailPeriod = true;
	if (EmailAt && EmailPeriod)
	break;
	if (j == checkEmail.length)
	break;
}
// if both the @ and . were in the string
	if (EmailAt && EmailPeriod)
	{
	EmailValid = true
	break;
}
}
if (!EmailValid)
{
	alert("Email is not valid.");
	theForm.email.focus();
	return (false);
}
else return true;
}