var entOn,entOff;
function animate(tagId,alfa,step){
div = document.getElementById(tagId);
var items = new Array();
for(c=i=0;i<div.childNodes.length;i++){
if (div.childNodes[i].tagName=="IMG"){
items[c] = div.childNodes[i];
c++;
}
}
last = items[items.length-1];
next = items[items.length-2];

last.style.opacity= alfa/100;
last.style.filter= "progid:DXImageTransform.Microsoft.Alpha(opacity="+alfa+")";
last.style.filter= "alpha(opacity="+alfa+")";

if ((alfa-step)>0){

setTimeout("animate('"+tagId+"',"+(alfa-step)+","+step+");",100);
}else{

next.style.opacity= 1;
next.style.filter= "progid:DXImageTransform.Microsoft.Alpha(opacity=100)";
next.style.filter= "alpha(opacity=100)";

tmp = last;
div.removeChild(last);
div.insertBefore(tmp,items[0]);
tmp.style.opacity= 1;
tmp.style.filter= "progid:DXImageTransform.Microsoft.Alpha(opacity=100)";
tmp.style.filter= "alpha(opacity=100)";

setTimeout( "slideSwitch('"+tagId+"',1000)", 2000 );
}
};
function slideSwitch(tagId,speed){
div = document.getElementById('slideshow');
if (div.style.visibility!="visible"){
div.style.visibility = "visible";
}
items = div.getElementsByTagName('img');
if (items.length>0){
animate(tagId,100,10);
}
};
function enterOn(tagId,opct)
{
var elem=document.getElementById(tagId);
op = (elem.style.opacity)?parseFloat(elem.style.opacity):parseInt(elem.style.filter)/100;
if(op<opct)
{
clearTimeout(entOff);
op += 0.05;
elem.style.opacity = op;
elem.style.filter='alpha(opacity='+op*100+')';
entOn=setTimeout('enterOn(\''+tagId+'\', '+opct+')',30);
}
};
function enterOff(tagId,opct)
{
var elem=document.getElementById(tagId);
op = (elem.style.opacity)?parseFloat(elem.style.opacity):parseInt(elem.style.filter)/100;
if(op>opct)
{
clearTimeout(entOn);
op -= 0.05;
elem.style.opacity = op;
elem.style.filter='alpha(opacity='+op*100+')';
entOff=setTimeout('enterOff(\''+tagId+'\', '+opct+')',20);
}
};