function checkForm(form)
{
	var cansubmit=true;
	
	if (form._login_email.value==""){if (cansubmit) form._login_email.focus(); cansubmit=false; changeStyle('_login_email_lable', 'error'); } else changeStyle('_login_email_lable', 'ok');
	if (form._login_pass.value=="") { if (cansubmit) form._login_pass.focus(); cansubmit=false; changeStyle('_login_pass_lable', 'error'); } else changeStyle('_login_pass_lable', 'ok');
	
	if (!cansubmit) alert(errFillRequiredFields);
	return cansubmit;
}