Mini-Page Layout inside Pageblocktable

I have inscribed pageblocktable inside Outputpanel so that I can have records and scroll bar when we have records to scroll.

I used account records in pageblocktable. For each account record,I managed to show Mini-page Layout when we hover in Account Name Link.

The problem comes here, When I hover a record in pageblocktable, I could see mini pagelayout pops-up. But when I scroll and try to hover, The page size increasing. Initially I thought,It was problem with Mini-page Layout.

Today I managed to Show Custom pop-up. Still problem persisted and got confirmed that It was not problem with Mini-Page Layout.

Now I stuck Of How to reduce this problem.

Might be I need to add some functionality.

For getting hover I used

<apex:column headerValue="Account Name" headerClass="TableTitle"> <a href="/{!doc.acc.Id}" id="{!doc.acc.Id}" position="relative" onblur="LookupHoverDetail.getHover('{!doc.acc.Id}').hide();" onfocus="LookupHoverDetail.getHover('{!doc.acc.Id}', '/{!doc.acc.Id}/m?retURL=%2F{!doc.acc.Id}&isAjaxRequest=1').show();" onmouseout="LookupHoverDetail.getHover('{!doc.acc.Id}').hide();" onmouseover="LookupHoverDetail.getHover('{!doc.acc.Id}', '/{!doc.acc.Id}/m?retURL=%2F{!doc.acc.Id}&isAjaxRequest=1').show();"> {!doc.acc.name} </a> </apex:column> 

Please Help me..!!