I would think that you'd want Cache Time = 0 -- banner ads rotate w/ page refreshes this way.

How many quotes are we talking about here?

I have a JavaScript banner rotation (in my header, not a custom island) that rotates images randomly with each page reload. I've stripped it down to just text here (think of "ads" as "quotes"):
HTML
<SCRIPT LANGUAGE="JavaScript">
<!--//

var how_many_ads = 3;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
var border = 0;
ad +=1;


if (ad==1) {
txt="Here's a quote"; 
}

if (ad==2) {
txt="Here's another quote"; 
}

if (ad==3) {
txt="Here's yet another quote!"; 
}

document.write('<small>' + txt + '</small>');

//-->
</SCRIPT>
(I see JavaScript isn't one of the CODE options here ;))

Perhaps you can use this as a starting point to rotate your quotes...?

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