How can I mend my dishwasher door?

The front has come off my Diplomat dishwasher. It still works as the door to the actual dishwasher still seals, but the front that integrates it with the rest of the kitchen - and which weighs the door down enough to stay open while I'm filling it, came off one day when I opened it. The fixings seem broken as we can't find any way to repair it. Any suggestions? I don't know what model it is, as it came with the house, and we have no manual.