How do i fix my oven door?

I bought a Micromark Class 1 Model - MM60133AWT oven 2 years ago and the outer glass door has fallen off. The Inner door is still in tact but it seems that the sealant used to stick the two together has failed. I was wondering if anyone knew:

1 - If this is repairable
2 - If so what new parts would be required (I want to buy these online)