var baseopacity=10

function prev_item(){
	if (items_no>0){
		items_no--;
		fade_image(document.images.photoslider);
		document.images.photoslider.src=photos[items_no];
		insert_items();
	}
}

function next_item(){
	if (items_no<photos.length-1){
		items_no++;
		fade_image(document.images.photoslider);
		document.images.photoslider.src=photos[items_no];
		insert_items();
	}
}

function fade_image(which2){
	imgobj=which2
	browserdetect=which2.filters? "ie" : typeof which2.style.MozOpacity=="string"? "mozilla" : typeof which2.style.KhtmlOpacity=="string"? "safari" :""
	instantset(baseopacity)
	highlighting=setInterval("gradualfade(imgobj)",50)
}

function instantset(degree){
	if (browserdetect=="mozilla")
	imgobj.style.MozOpacity=degree/100
	else if (browserdetect=="ie")
	imgobj.filters.alpha.opacity=degree	
	else if (browserdetect=="safari")
	imgobj.style.KhtmlOpacity=degree/100
}

function cleartimer(){
	if (window.highlighting) clearInterval(highlighting)
}

function gradualfade(cur2){
	if (browserdetect=="mozilla" && cur2.style.MozOpacity<1)
	cur2.style.MozOpacity=Math.min(parseFloat(cur2.style.MozOpacity)+0.1, 0.99)	
	else if (browserdetect=="safari" && cur2.style.KhtmlOpacity<1)
	cur2.style.KhtmlOpacity=Math.min(parseFloat(cur2.style.KhtmlOpacity)+0.1, 0.99)
	else if (browserdetect=="ie" && cur2.filters.alpha.opacity<100)
	cur2.filters.alpha.opacity+=10
	else if (window.highlighting)
	clearInterval(highlighting)
	
}