function tilbudsklub(thisform) {
	strError = 'Der opstod f\370lgende fejl:\n\n';
	intError = 0;
  	
	var knap = thisform.payment;
    var isChecked = false;
	
	if (thisform.tilbudemail.value == "") {
		intError = 1;
		strError = strError + '- E-mail skal udfyldes\n'
		thisform.tilbudemail.focus(); 
	} else {
		var regex = new RegExp("[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?");
		if (!thisform.tilbudemail.value.match(regex)) {
			intError = 1;
			strError = strError + '- E-mail skal udfyldes korrekt\n';
			thisform.tilbudemail.focus(); 
		}
	}
	
	if (intError == 1) {
		alert(strError)
		return false;
	}
}