// bøger
function boger(){

document.all["musik"].style.visibility ="hidden"
document.all["meditation"].style.visibility ="hidden"
document.all["postkort"].style.visibility ="hidden"
document.all["bestilling"].style.visibility ="hidden"
document.all["b0ger1"].style.visibility = "visible"
7}
// musik
function musik(){

document.all["b0ger1"].style.visibility ="hidden"
document.all["meditation"].style.visibility ="hidden"
document.all["postkort"].style.visibility ="hidden"
document.all["bestilling"].style.visibility ="hidden"
document.all["musik"].style.visibility = "visible"
}
// meditation
function meditation(){

document.all["b0ger1"].style.visibility ="hidden"
document.all["musik"].style.visibility ="hidden"
document.all["postkort"].style.visibility ="hidden"
document.all["bestilling"].style.visibility ="hidden"
document.all["meditation"].style.visibility = "visible"
}
// postkort
function postkort(){
document.all["b0ger1"].style.visibility ="hidden"
document.all["musik"].style.visibility ="hidden"
document.all["meditation"].style.visibility ="hidden"
document.all["bestilling"].style.visibility ="hidden"
document.all["postkort"].style.visibility = "visible"
}
// bestilling
function bestilling(){
document.all["b0ger1"].style.visibility ="hidden"
document.all["musik"].style.visibility ="hidden"
document.all["meditation"].style.visibility ="hidden"
document.all["postkort"].style.visibility ="hidden"
document.all["bestilling"].style.visibility = "visible"
}

function kob(tidle) {
var a=document.kob.elements[tidle].value
a++
document.kob.elements[tidle].value = a
Beregnpris ()
var aa=document.kob.totalpris.value
alert("Med "+tidle+" har du i alt bestilt for "+aa+" kr. inklusiv porto. En eventuel afbestilling, under bestilling.")
videre = "prisen"
//document.kob.total.value = aa
}

function ieKeyDown() {
		if (event.keyCode == 13)
			document.all.sendform.submit();
	}

function tjek(){
var aa = document.kob.totalpris.value 
if (aa=="0") {return false}
else {return false}
}