By "On the Inside" I assume you mean between the two pains of glass.
If this is indeed the case, the the vacuum between the two pains has failed. Nothing to do but replace the glass, the sash, or the entire window.
Give a man a fish and he eats for a day. Give a man a welfare check, a forty ounce malt liquor, a crack pipe, an Obama phone, free health insurance. and some Air Jordan's and he votes Democrat for a lifetime.
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