var timerID;

var scrollDir=0;

var scrollSpeed=250/30;

function scrollIt (pControlId) {
	
	var tmp = getElement(pControlId).style.left;
	
	if (tmp.indexOf('px') > 0) {
		tmp = tmp.substr(0,tmp.length-2);
	} else if (tmp.indexOf('pt') > 0) {
		tmp = tmp.substr(0,tmp.length-2);
	}
	
	tmp -= (scrollSpeed * scrollDir);

	var m = getElement(pControlId).offsetWidth - 120;

	if(tmp > 0) tmp = 0;

	if(tmp < -m) tmp = -m;

	getElement(pControlId).style.left = tmp;

	timerID = setTimeout("scrollIt('" + pControlId + "')", 100);
}

function scrollStart(Dir, pControlId){
	
	scrollDir=Dir;

	scrollIt(pControlId);

}

function scrollStop(){

	if (timerID != null) clearTimeout(timerID);

}