function gallery_nav_scroll (dir)
{
	var lis = document.getElementById('gallery_thumbs').getElementsByTagName('li');
	if (lis.length <= 7)
		return;


	var margin_int;

	var margin_now = document.getElementById('gallery_thumbs').style.marginLeft;
	if (margin_now.length <= 0)
	{
		margin_int = 0;
	}
	else
	{
		margin_int = parseInt(margin_now.substr(0,margin_now.length-2));
	}
	
	var width_str = document.getElementById('gallery_thumbs').style.width;
	var width_int = (parseInt(width_str.substr(0,width_str.length-2)) - 532) * -1;


	margin_int += (dir * 76);
	if (margin_int > 0)
		margin_int = 0;
	if (margin_int < width_int)
		margin_int = width_int;
		
	document.getElementById('gallery_thumbs').style.marginLeft = margin_int + "px";	

}

addWindowOnLoadEvent(function(){
	document.getElementById('gallery_nav_prev').onclick=function(){ gallery_nav_scroll(0.25);
																	setTimeout('gallery_nav_scroll(0.5)',20);
																	setTimeout('gallery_nav_scroll(0.75)',40);
																	setTimeout('gallery_nav_scroll(0.75)',60);
																	setTimeout('gallery_nav_scroll(0.5)',80);
																	setTimeout('gallery_nav_scroll(0.25)',100);
																	return false;};
	document.getElementById('gallery_nav_next').onclick=function(){ gallery_nav_scroll(-0.25);
																	setTimeout('gallery_nav_scroll(-0.5)',20);
																	setTimeout('gallery_nav_scroll(-0.75)',40);
																	setTimeout('gallery_nav_scroll(-0.75)',60);
																	setTimeout('gallery_nav_scroll(-0.5)',80);
																	setTimeout('gallery_nav_scroll(-0.25)',100);
																	return false;};
});