Using web viewer in portal

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Dear All,

I have three columns in my portal. I am passing some web address in one of the column of the portal, and in every row the the web address is different. For example, in first row I want to open google.com, in second one Rediff.com and in third one yahoo.com. here I am using set web viewer script and I have assigned 'web' as name of the web viewer. Please help in achieving this task.

Thanks in advance.