function isEmailValid(checkThisEmail){
	var myEMailIsValid = true;
	var myAtSymbolAt = checkThisEmail.indexOf('@');
	var myLastDotAt = checkThisEmail.lastIndexOf('.');
	var mySpaceAt = checkThisEmail.indexOf(' ');
	var myLength = checkThisEmail.length;
	if (myAtSymbolAt < 1 ) {myEMailIsValid = false}
	if (myLastDotAt < myAtSymbolAt) {myEMailIsValid = false}
	if (myLength - myLastDotAt <= 2) {myEMailIsValid = false}
	if (mySpaceAt != -1)  {myEMailIsValid = false}
	return myEMailIsValid;
}

function check(lng)
{
	var lang;
	
	switch (lng){
		case 'lt':
			lang = Array ("Įveskite vardą!", "Teisingai įveskite el. pašto adresą!", "Įveskite temą!", "Įveskite tekstą!");
		break;
		case 'en':
			lang = Array ("Enter name!", "Enter valid e-mail!", "Enter theme!", "Enter text!");
		break;
	}
	
	if (document.sendMail.name.value == '')
	{
		alert(lang[0]);
		return false;
	}
	
	if (!isEmailValid(document.sendMail.mail.value))
	{ 
		alert(lang[1])
		return false;
	}
	
	if (document.sendMail.theme.value == '')
	{
		alert(lang[2]);
		return false;
	}	

	if (document.sendMail.text.value == '')
	{
		alert(lang[3]);
		return false;
	}
}

function checkC(lng)
{
	var lang;
	
	switch (lng){
		case 'lt':
			lang = Array ("Įveskite vardą!", "Teisingai įveskite el. pašto adresą!", "Įveskite temą!", "Įveskite tekstą!");
		break;
		case 'en':
			lang = Array ("Enter name!", "Enter valid e-mail!", "Enter theme!", "Enter text!");
		break;
	}
	
	if (document.sendMail.theme.value == '')
	{
		alert(lang[2]);
		return false;
	}	

	if (document.sendMail.text.value == '')
	{
		alert(lang[3]);
		return false;
	}
}