function link(url) {
	location.href = url;
}
function popupPage(page) {
	window.open(page, '', 'width=600,height=600,scrollbars=yes');
}
function lowOpacity(elmId) {
	elm = document.getElementById(elmId);
	if ((navigator.appName.indexOf("Netscape") !=-1) && parseInt(navigator.appVersion)>=5) {
		elm.style.MozOpacity = 0.6;
	} else if (navigator.appName.indexOf("Microsoft")!=-1&&parseInt(navigator.appVersion)>=4) {
		elm.filters.alpha.opacity = 60;
	}
}
function noOpacity(elmId) {
	elm = document.getElementById(elmId);
	if ((navigator.appName.indexOf("Netscape") !=-1) && parseInt(navigator.appVersion)>=5) {
		elm.style.MozOpacity = 1;
	} else if (navigator.appName.indexOf("Microsoft")!=-1&&parseInt(navigator.appVersion)>=4) {
		elm.filters.alpha.opacity = 100;
	}
}
function show(elmId) {
	document.getElementById(elmId).style.display='block';
}
function hide(elmId) {
	document.getElementById(elmId).style.display='none';
}
function validatePaymentForm() {
	var cardno = document.getElementById('cardno');
	var expmm = document.getElementById('expmm');
	var expyy = document.getElementById('expyy');
	var cvc = document.getElementById('cvc');
	if(typeof(cardno.value) == 'undefined' || cardno.value.length < 16) { alert('Du skal udfylde dit kortnummer.');return false; }
	if(typeof(expmm.value) == 'undefined' || expmm.value.length < 1) { alert('Du skal udfylde dit korts udløbsmåned.');return false; }
	if(typeof(expyy.value) == 'undefined' || expyy.value.length < 1) { alert('Du skal udfylde dit korts udløbsår.');return false; }
	if(typeof(cvc.value) == 'undefined' || cvc.value.length < 3) { alert('Du skal udfylde de tre kontrolcifre.');return false; }
	return true;
}