function sShow(id){
	if(id<1 && id>ni-1){
		return false;
	}
	var st=document.getElementById("slideshowTitle");
	var sl=document.getElementById("slideshowLink");
	var spl=document.getElementById("slideshowPicL");
	var sp=document.getElementById("slideshowPic");
	st.innerHTML=slides[id].t;
	st.href=sl.href=spl.href=slides[id].l;
	setOpacity(0);
	sp.style.backgroundImage="url("+imgPrefix+slides[id].i+")";
	fade(1);
	setCookie('slideI',id);
}
function sMove(arw){
	var id=parseInt(getCookie('slideI'));
	var add=0;
	if(arw=='auto'){
		if(id+1 >= ni){
			add=(ni-1)*(-1);
		}else{
			add=1;
		}
	}else{
		add=arw.id=='rightArrow' ? 1 : -1;
	}
	var nid	= id +add;
	if(nid < ni && nid >= 0){
		sShow(nid);
	}
	document.getElementById('rightArrow').className=nid+1>=ni ? 'rAG' : 'rAB';
	document.getElementById('leftArrow').className=nid<=0 ? 'lAG' : 'lAB';
}
function fade(d){
	var duration=1500;
	var steps=30;
	var r;
	for(i=0;i<=1;i+=(1/steps)){
		r=d?i:1-i;
		setTimeout("setOpacity("+r+")",i*duration);
	}
}
function setOpacity(level) {
	var sp=document.getElementById("slideshowPic");
	sp.style.opacity=level;
	sp.style.MozOpacity=level;
	sp.style.filter="alpha(opacity="+(level*100)+");";
}