var grouplistamount, grouplisttimer;
function scrollgrouplist(){
	grouplistamount=arguments[0];
	grouplisttimer=setInterval("stepgrouplist()", arguments[1]);
}

function clickgrouplist(){
    document.getElementById("grouplist").scrollLeft+=arguments[0];
}

function stepgrouplist()
{
	document.getElementById("grouplist").scrollLeft+=grouplistamount;
}

function stopgrouplist(){
	clearInterval(grouplisttimer);
}