function kontrola()
{
	var text_jmena = self.document.forms.f.det_form_jmeno.value;
	var text_email = self.document.forms.f.det_form_email.value;

	if (text_jmena == "")
	{
		alert('Prominte, ale jméno musí být zadáno!');
		return false;
	}
	
	if (text_email == "")
	{
		alert('Prominte, ale email musí být zadán!');
		return false;
	}
	
	erule = /^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,3}$/;
	
	if (!erule.test(text_email))
	{
		alert('Nesprávný formát e-mailu');
		return false;
	}
	
	self.document.forms.f.submit()
	return true; 
}

function kontrola_en()
{
	var text_jmena = self.document.forms.f.det_form_jmeno.value;
	var text_email = self.document.forms.f.det_form_email.value;

	if (text_jmena == "")
	{
		alert('Name is required item!');
		return false;
	}
	
	if (text_email == "")
	{
		alert('E-mail is required item!');
		return false;
	}
	
	erule = /^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,3}$/;
	
	if (!erule.test(text_email))
	{
		alert('Wrong e-mail address');
		return false;
	}
	
	self.document.forms.f.submit()
	return true; 
}

function kontrolahypo_cz()
{
	var text_jmena = self.document.forms.f.jmeno.value;
	var text_email = self.document.forms.f.email.value;

	if (text_jmena == "")
	{
		alert('Prominte, ale jméno musí být zadáno!');
		return false;
	}
	
	if (text_email == "")
	{
		alert('Prominte, ale email musí být zadán!');
		return false;
	}
	
	erule = /^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,3}$/;
	
	if (!erule.test(text_email))
	{
		alert('Nesprávný formát e-mailu');
		return false;
	}
	
	self.document.forms.f.submit()
	return false; 
}

function kontrolahypo_en()
{
	var text_jmena = self.document.forms.f.jmeno.value;
	var text_email = self.document.forms.f.email.value;

	if (text_jmena == "")
	{
		alert('Name is required item!');
		return false;
	}
	
	if (text_email == "")
	{
		alert('E-mail is required item!');
		return false;
	}
	
	erule = /^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,3}$/;
	
	if (!erule.test(text_email))
	{
		alert('Wrong e-mail address');
		return false;
	}
	
	self.document.forms.f.submit()
	return true; 
}