var doScrollUp = 0;
var doScrollDown = 0;

function scrollUpStart(isfirst){
	if (isfirst || doScrollUp) {
		window.frames.contentfra.scrollBy(0,-5);
		doScrollUp = 1;
	}
	setTimeout("scrollUpStart(0)", 50);
}

function scrollUpStop(){
	doScrollUp = 0;
}

function scrollDownStart(isfirst){
	if (isfirst || doScrollDown) {
		window.frames.contentfra.scrollBy(0,5);
		doScrollDown += 1;
	}
	setTimeout("scrollDownStart(0)", 50);
}

function scrollDownStop(){
	doScrollDown = 0;
}