Si... hai capito il problema... Ma ho sistemato il css con esito negativo.
Codice PHP:
HTML
<body onload="javascript: fadeIn('dissol', 1500);">
<div id="centro">
[img]/img/design.jpg[/img]
</div>
CSS
#dissol {
opacity: 0;
filter: alpha(opacity=0);
}
JAVASCRIPT
function fadeIn(divID, time)
{
var speed = Math.round(time / 100);
var frame = 0;
var fade;
for(fade = 0; fade < 100; fade++) {
setTimeout("setOpacity('"+divID+"', "+fade+")", (speed * frame));
frame++;
}
}
function setOpacity(id, opacity)
{
var element = document.getElementById(id);
if(document.all)
element.style.filter = "alpha(opacity=" + opacity + ")";
else
element.style.opacity = opacity / 100;
}