function PerformScroll(step){
	loop=true;
	myscroll(step);
}

function myscroll(step) {
	var obj=document.getElementById("divContainer");
	var d=obj.scrollTop+step;
	if (d<0) d=0;
	if ((d>=0) || (d<obj.scrollHeight-obj.clentHeight)) obj.scrollTop=d;
	if (loop) setTimeout("myscroll("+step+")", 50);
}


function CeaseScroll(){
	loop=false;
}