function valid_contact_form()
{
	var pass = true;
	pass_f = field_check('name');
	if(!pass_f) pass = false;
	pass_f = field_check('mail_cont');
	if(!pass_f) pass = false;
	pass_f = field_check('telefon');
	if(!pass_f) pass = false;
	pass_f = field_check('message');
	if(!pass_f) pass = false;
	pass_f = field_check('calc');
	if(!pass_f) pass = false;
	
	if(pass == false)
		alert("You must specify all required data!");
	
	return pass;
}

function valid_subscribe_form()
{
	var pass = true;
	pass_f = field_check('name');
	if(!pass_f) pass = false;
	pass_f = field_check('mail_cont');
	if(!pass_f) pass = false;
	pass_f = field_check('calc');
	if(!pass_f) pass = false;
	
	if(pass == false)
		alert("You must specify all required data!");
	
	return pass;
}

function field_check(i)
{
	var f = null;
	var error = "#d56900";
	var ok = "#000";
	
	f = document.getElementById(i);
	if(f.value.length < 1)
	{
		document.getElementById('l'+i).style.color = error;
		return false;;
	}
	else
		document.getElementById('l'+i).style.color = ok;
		
	return true;
}