Mouseover Popup Message - display message in another frame.

I thought this would be simple but I have having problems.  I have a frames page with a row along the top(named top), and 2 columns below.  In both columns (named left & right) I have links that onmouseover a description of the link will POP UP and will disappear again onmouseout.  This all works good.

What I need is for the pop-up message to appear in a DIV in the TOP frame when the mouse is placed over a link in either the LEFT or RIGHT frames.  Basically it will act as a HELP or INSTRUCTION box.  I also need the DIV in the TOP frame to display a default message like "Place your Mouse over a Link For Instructions" whenever the mouse IS NOT over a link - onmouseout I guess.

I tried to get the message to display in another frame by changing the JS by adding a parent.top:

if(navigator.family =="nn4") {
     parent.top.document.object1.document.write(desc);
     parent.top.document.object1.document.close();
     parent.top.document.object1.left=x+15;
     parent.top.document.object1.top=y-5;
     }
else if(navigator.family =="ie4"){
     parent.top.object1.innerHTML=desc;
     parent.top.object1.style.pixelLeft=x+15;
     parent.top.object1.style.pixelTop=y-5;
     }
else if(navigator.family =="gecko"){
     parent.top.document.getElementById("object1").innerHTML=desc;
     parent.top.document.getElementById("object1").style.left=x+15;
     parent.top.document.getElementById("object1").style.top=y-5;
     }

 but that didn't work.  I'm pretty sure that I can position it in the top frame, just not sure how to get it to appear there.

I have an example page posted at http://www.laservalley.com/popups.htm
if someone wants to take a shot at it.  I only have 30 points left - hope thats enough.

Thanks Max