Macro for calculating pairwise rolling correlations

Please find the workbook attached.

The first row contains the names of the banks and all other entries are the daily returns of each bank. What I want to do is find the rolling correlation (from the past 1 year of returns) of pairwise banks beginning from 1/1/2008, I'll provide an example of what I want to do:

Starting with ERSTE GROUP BANK, on the date JAN 1st 2008, I want to find the correlation between ERSTE GROUP BANK and RAIFFEISEN BANK INTL based on the past 1 year worth of returns, so the formula would be =CORREL(B2:B263,C2:C263), similarly on JAN 2nd 2008 the formula would be =CORREL(B3:B264,C3:C264) and so on until Feb 28th 2013.

Then I want to do the same thing but now on the date JAN 1st 2008, I find the pairwise correlation between ERSTE GROUP BANK and DEXIA, hence the formula on JAN 1st 2008 would be =CORREL(B2:B263,D2:D263) and so on until Feb 28th 2013.

So essentially I want to find the pairwise correlations between ERSTE GROUP BANK and every other bank like this, from 1/1/2008-28/2/2013.

Then I want to repeat this with ALL the other banks, eg, now take RAIFFEISEN BANK INTL as the 'primary' bank and from 1/1/2008-28/2/2013, I want to find the pairwise correlation between RAIFFEISEN BANK INTL and ERSTE GROUP BANK, then RAIFFEISEN BANK INTL and DEXIA etc.

Does anyone have an idea on how to write a macro for this? I am completely stuck. Any help would be appreciated.