// set up scroll bars
function setScrollers()
{
	var scrollDistance = 10; // advance this amount of px each scroll cycle
	var scrollSpeed = 30; // speed of scroller (milliseconds)

	// set up scroll bars if content overflows
	var scHeight = $('#content')[0].scrollHeight; // height of scroll
	var contentHeight = $('#content').height();
//    alert(scHeight +'>'+ contentHeight);
	if (scHeight > contentHeight)
	{
		// prepare scroll bars
		var htmlScrollUp = '<a href="#" id="content_sup"><img src="/images/scroll_u.gif" width="9" height="5" alt="" /></a>';
		var htmlScrollDown = '<a href="#" id="content_sdown"><img src="/images/scroll_d.gif" width="9" height="5" alt="" /></a>';
		if (!$('#content_scroll')[0]) $('#content_wrapper').append('<div id="content_scroll">' + htmlScrollUp + htmlScrollDown + '</div>');

		// set up functionality for scroll buttons
		var scrollTimer;
		$('#content_sdown').mousedown(function() { if (!scrollTimer) scrollTimer = setInterval(function() { $('#content')[0].scrollTop += scrollDistance; }, scrollSpeed); });
		$('#content_sdown').mouseup(function() { clearTimeout(scrollTimer); scrollTimer = ''; });

		$('#content_sup').mousedown(function() { if (!scrollTimer) scrollTimer = setInterval(function() { $('#content')[0].scrollTop -= scrollDistance; }, scrollSpeed); });
		$('#content_sup').mouseup(function() { clearTimeout(scrollTimer); scrollTimer = ''; });
		// hide scroll bar if everything when well
		if ($('#content').css('overflow') != 'hidden') $('#content').css('overflow', 'hidden');
		// set scroll bars to top
		$('#content')[0].scrollTop = 0;
	}
	else { if ($('#content_scroll')[0]) $('#content_scroll').hide(); }
}