function scrollButtons(a) {
	if(!elem) var elem = document.getElementById('scroll_frame').getElementsByTagName('ul')[0];				
	if(!elem.y_pos)	elem.y_pos = 0;
	
	elem.direction = a.href.split('#')[1];
	elem.y = elem.offsetHeight;
	
	if(elem.direction == 'up' && (Math.abs(elem.y_pos)) > 0 && elem.y_pos < elem.y) elem.y_pos += 25;
	if(elem.direction == 'down' && ((Math.abs(elem.y_pos)) + document.getElementById('scroll_frame').offsetHeight) < elem.y) elem.y_pos -= 25;
	
	elem.style.top = (elem.y_pos)+'px';
	
	return false;
}