var timer_id;
function ScrollShows(frm,inc) {
  if (timer_id) clearTimeout(timer_id);
  if (window.frames[frm]) {
	window.frames[frm].scrollBy(0, inc);
	timer_id = setTimeout("ScrollShows('" + frm + "'," + inc + ")", 20);
  }
}

function ScrollX(frm,inc) {
  if (timer_id) clearTimeout(timer_id);
  if (window.frames[frm]) {
	window.frames[frm].scrollBy(inc, 0);
	timer_id = setTimeout("ScrollX('" + frm + "'," + inc + ")", 20);
  }
}

function ScrollStop() { if (timer_id) clearTimeout(timer_id); }


function strReplace(s, r, w){
     return s.split(r).join(w);
}


function RollButton( butt ) {
	butt.src = strReplace(butt.src , "off_" , "on_");
}

function RestoreButton( butt ) {
	butt.src = strReplace(butt.src , "on_" , "off_");
}

function PreloadButt() {
	buttons = new Array(
					"images/on_up.gif",
					"images/on_down.gif"					
				);
	var preload = new Array();

	for (i in buttons ){
		preload[i] = new Image();
		preload[i].src = buttons[i] ;
	}
}