var imgs = new Array("mc-cuda.png","mediacoder.png","mc-skinned.png","prefs.png","mc-effects.png","mediacoder-wine.png","mediacoder-archlinux.png","mediacoder-vista.jpg","benchmark-result.png","ext-ipod.png","ext-psp.png","ext-zune.png","ext-n70.png","ext-archos.png","ext-miniplayer.png","ext-zen.png","ext-minimo.png","ext-e900.png","ext-mpeg-maker.png","ext-audioripper.png","ext-videodisc.png","ext-x264setup.png","mc-autobitrate.png");
var imgpath = "screenshots/";

var slider = element("sliderimg");
var sid = GetUrlArg("sid");
var cur = parseInt(sid ? sid : "0");
if (cur >= 0 && cur < imgs.length) {
	slider.src = (imgs[cur].indexOf("/") > 0) ? imgs[cur] : (imgpath + imgs[cur]);
} else {
	slider.src = imgpath + sid;
	cur = 0;
}
if (cur < imgs.length - 1) element("linknext").href = UrlWithNoArg() + "?sid=" + (cur + 1);
if (cur > 0) element("linkprev").href = UrlWithNoArg() + "?sid=" + (cur - 1);
element("info").innerHTML = (cur + 1) + " of " + imgs.length;
function element(id)
{
	return document.getElementById(id);
}
function NextSlider()
{
slider.src = imgpath + imgs[cur < imgs.length ? ++cur : imgs.length - 1];
}
function PrevSlider()
{
slider.src = imgpath + imgs[cur > 0 ? --cur : 0];
}
function UrlWithNoArg()
{
	var idx=document.location.href.indexOf(name+'?');
	return idx<0?document.location.href:document.location.href.substring(0, idx)
}
function GetUrlArg(name)
{
	var idx=document.location.href.indexOf(name+'=');
	if (idx<=0) return null;
	var argstr=document.location.href.substring(idx+name.length+1);
	idx = argstr.indexOf('&');
	return idx>=0?argstr.substring(0, idx):argstr;
}