function validateform(formname, checkemail) {
	for(var i=0; i<fields.length; i++) {
		if (document.forms[formname].elements[fields[i]].value == '' || document.forms[formname].elements[fields[i]].value == 0) {
			alert(fields_info[i]);
			document.forms[formname].elements[fields[i]].focus();
			return false;
		}
	}
	if (checkemail == 1)
	{
		if (validateemail(formname, document.forms[formname].elements['email'].value)) {
			return true;
		} else {
			return false;
		}
	}
}

function validateemail(formname, t) {
	maska = /^[0-9a-z_.-]+@([0-9a-z-]+.)+[a-z]{2,4}$/;
	if (maska.test(t)==false) { 
		alert("Invalid e-mail address");
		document.forms[formname].elements['email'].focus();
		return false;
	}
	return true;
}