function newcaptcha() {
	document.getElementById('captchaimg').src = '/captcha.php?' + Math.random();	
}
function checkform(fieldsarray) {
	var warnings = new Array();
    var fields = fieldsarray.split(';');
    for(x = 0; x < fields.length; x++) {
		var field = fields[x].split('-');
		var obj = document.getElementById(field[0]);
		if(obj.value.length == 0) {
			warnings[warnings.length] = fields[x];
			obj.className += (obj.className.indexOf('fieldbgwarning') == -1) ? ' fieldbgwarning' : '';
		} else {
			obj.className = obj.className.replace('fieldbgwarning', '');
		}
    }
	if(warnings.length == 0) {
		return true;
	} else {
		var warning = 'Du mangler at udfylde følgende felter:';
		for(x = 0; x < warnings.length; x++) {
			var field = warnings[x].split('-');
			warning += "\n- " + field[1];
		}
		alert(warning);
		return false;
	}
}