function start_show_book() {
v_anzahl1 = parseInt(document.getElementById("anzahl1").innerHTML);
v_anzahl2 = parseInt(document.getElementById("anzahl2").innerHTML);
v_anzahl3 = parseInt(document.getElementById("anzahl3").innerHTML);
v_anzahl_storys = v_anzahl3+1;


setTimeout("show_book(0)", 500);
}

function show_book(story) {

story = story + 1;
var opacity = 0;
var latenz = 0;


var objekt = document.getElementById("buch_"+story);
var objekt2 = document.getElementById("cover_"+story);
var objekt3 = document.getElementById("cover2_"+story);
var objekt4 = document.getElementById("cover3_"+story);

objekt.style.opacity = opacity;
objekt2.style.filter="Alpha(opacity=0)"
objekt3.style.filter="Alpha(opacity=0)"
objekt4.style.filter="Alpha(opacity=0)"
objekt.style.display = "block";

while(opacity < 1)
{
latenz = latenz + 50;
opacity = opacity + 0.05;
setTimeout("change_opacity("+opacity+","+story+")", latenz);

}
if(story == v_anzahl1)
{
setTimeout("clear_book('Buch des Monats <a class=\"orange\" href=\"lesen.php?filter1=buch-des-monats\">Mehr</a>',"+story+");", 8000);
}

else if(story == v_anzahl2)
{
setTimeout("clear_book('Neuerscheinungen <a class=\"orange\" href=\"lesen.php\">Mehr</a>',"+story+");", 8000);
}

else if(story == v_anzahl3)
{
setTimeout("clear_book('Buch des Tages <a class=\"orange\" href=\"lesen.php?filter1=buch-des-tages\">Mehr</a>',0);", 8000);
}

else if(story < v_anzahl3)
{
setTimeout("show_book("+story+")", 500);
}

}

function change_opacity(opacity,story)
{
var objekt = document.getElementById("buch_"+story);
var objekt2 = document.getElementById("cover_"+story);
var objekt3 = document.getElementById("cover2_"+story);
var objekt4 = document.getElementById("cover3_"+story);

var opacity2 = opacity * 80;
objekt.style.opacity = opacity;
objekt2.style.filter="Alpha(opacity="+opacity2+")"
objekt3.style.filter="Alpha(opacity="+opacity2+")"
objekt4.style.filter="Alpha(opacity="+opacity2+")"
}

function clear_book (titel, story)
{
document.getElementById("kasten_blau_titel").innerHTML = titel;
var story_del = 1
while (story_del < v_anzahl_storys)
{
document.getElementById("buch_"+story_del).style.display = "none";
story_del = story_del + 1;
}
setTimeout("show_book("+story+");", 500);
}