function scroller (end, current, lang) {
	var timer = 0;
	var speed = 5;
	var start = 0;
	var newsize = start;
	for(i = 0; i <= end; i++) {
		setTimeout("document.getElementById('scrollerimg').style.left = '"+newsize+"px';", speed*timer);
		timer++;
		newsize = start + i ;
	}
       if(current=='newsletter' || current=='programme' || current=='venue' || current=='goal' || current=='sponsors' || current=='registration')
       {
          if(lang!="")
               lang = "-" + lang;
       }
       else lang = "";
	if(current)
		document.getElementById(current).src="http://www.dutchtestingconference.nl/img/nav_img/nav_" + current + "_visited" + lang + ".gif";
}