// Checkform
function validate_field(field, errorfield) {
	with (field) {
		if (value == null || value == "") {
			document.getElementById(errorfield).innerHTML = "Required!"
			return 1
		} else {
			document.getElementById(errorfield).innerHTML = ""
			return 0
		}
	}
}

function validate_form(thisform) {
	var validate_error

	with (thisform) {
		validate_error = validate_field(cpers, "errCpers")
		validate_error += validate_field(tel, "errTel")
		validate_error += validate_field(mail, "errMail")

		if (validate_error > 0) {
			return false
		}
	}
}