function validateField(fieldvalue) {
	if(fieldvalue == "" || fieldvalue == null) 
		return false;
	else
		return true;
}

function validateEmail(fieldvalue) {
	var reg = /.*@.*\..*/;
	if(fieldvalue.match(reg))
		return true;
	else 
		return false;
}

function resetErrorFields() {
	var form = document.getElementById("aus_form");
	
	for(var i = 0; i< form.elements.length; i++) {
		if(form.elements[i].className == 'error_field')
			form.elements[i].className = '';
	}
}