// configuration variables
var slow_speed = 2;
var fast_speed = 10;

// no need to touch below this line
var scroll_timer = null;

function contentSetup( id, top ) {
	content = document.getElementById( id );
}

function scrollManager( action ) {
	switch ( action ) {
		case "up_slow":
			clearInterval( scroll_timer );
			scroll_timer = setInterval( "content.scrollTop = (parseInt(content.scrollTop) - slow_speed);", 40 );
			break;
		case "up_fast":
			clearInterval( scroll_timer );
			scroll_timer = setInterval( "content.scrollTop = (parseInt(content.scrollTop) - fast_speed);", 20 );
			break;
		case "dn_slow":
			clearInterval( scroll_timer );
			scroll_timer = setInterval( "content.scrollTop = (parseInt(content.scrollTop) + slow_speed);", 40 );
			break;
		case "dn_fast":
			clearInterval( scroll_timer );
			scroll_timer = setInterval( "content.scrollTop = (parseInt(content.scrollTop) + fast_speed);", 20 );
			break;
		case "all_stop":
			clearInterval( scroll_timer );
			break;
	}
}