function load(){
	document.getElementById('content').style.overflow='hidden';
	document.getElementById('content').style.height='420px';
}

var timepfeil;

function scrollup(){
	var inhalt = document.getElementById("scroll");
	if(px(inhalt.style.top) < 0) {
		inhalt.style.top = px(inhalt.style.top) + 3 + "px";
		timepfeil = setTimeout("scrollup()", 1);
	}
}

function scrolldown(){
	var inhalt = document.getElementById("scroll");
	var fenster = document.getElementById("content");
	if(inhalt.offsetTop + inhalt.offsetHeight >= fenster.offsetHeight ) {
		inhalt.style.top = px(inhalt.style.top) - 3 + "px";
		timepfeil = setTimeout("scrolldown()", 1);
	}
}

function stop() {	
	clearTimeout(timepfeil);
}

function px(text) {
	return parseInt(text.substring(0,text.indexOf("px")));
}