function focusField (objField) {
	if (objField.className == 'form_input') {
		objField.className = 'form_input_focus';
		objField.hiddenValue = objField.value;
		objField.value = '';
	}
}

function blurField (objField) {
	if (objField.value == '') {
		objField.className = 'form_input';
		objField.value = objField.hiddenValue;
	}
}