Non so se ti aiuterà ma l'idea c'è.

codice:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title>Untitled</title>
<script language="JavaScript" type="text/javascript">
<!--
var myPopUp = null;
function openW() {
  var wnd_parms = 'height=320, width=380, menubar=0, toolbar=0, alwaysRaised=yes'; 
  var url = "test2094b.html";
  myPopUp = window.open(url,null,wnd_parms);
}

function closeW() {
 myPopUp.close();
}

function chgMyPopUp(anObject) {
 if (myPopUp == null) {
  openW();
 } // if (myPopUp == null)
 myPopUp.document.getElementById('myDiv').innerHTML = anObject.innerHTML; 
}
//-->
</script>
</head>
<body>
Passare il puntatore del mouse su un testo...


<div id="d1" onmouseover="chgMyPopUp(this);" style="background-color:red">
s jkfjsf s fccklqs,fkqsf  qsnfdliqsfd q 

sdncjqsdfi  djqsfdjlqs dfqsnd  qsnfioqisoz

n jqsnfqfnlqsf  sdfbjqsfcn qsf sjfcnkq fq 

</div>
<div onmouseover="chgMyPopUp(this)" style="background-color:white">
 nvkjwsddv  qsndfkjs  sbdsu u sqd  sd  sdoooqzq 

d qsjkn   sdqfcnkudsjfc qd aqndiQIZF P SFLKNSZFCOQ 

FQ SKLF NDknsk qs dfkjsdc,nqs sfn qsf qss fok,sqfd 

</div>
<div onmouseover="chgMyPopUp(this)" style="background-color:green">
dvgfsdf  qs fqlijf qdsf nqs f ,nfdkiq df  snkfiqs jfiq sf   dqisfdjqo sd 

 nbfkjfvn sv ndsdfiq fb def sdju sdeif sqjufqksdn qoisdfj qesfn 

sdvjsdjv s qssdjfcoiqsdq cfqsb yz dahvzd qcfyqsdcf qsdqbf

</div>
</body>
</html>