var scrolling;

function doScroll(by) {
	if(!(document.getElementById('page').style.top.replace(/px/g, "")*1 > 5 && by>0))
		document.getElementById('page').style.top = (document.getElementById('page').style.top.replace(/px/g, "") * 1 + by) + "px";
}

function scroll(onoff,by) {
	if(onoff==1) scrolling=setInterval("doScroll(" + by + ")", 5);
	else clearInterval(scrolling);
}

function orderform() {
	var pcs=document.getElementById('pcs').value;
	var thestring;
	if(pcs==1) thestring="eine CD:"; else thestring=pcs + " CDs:";
		
	document.getElementById('pricepercd').innerHTML="Preis für " + thestring;
	document.getElementById('pricecds').innerHTML="CHF " + (pcs*25) + ".-- (zzgl. Versandkosten)";	
}