Fevi-quick stick fast glue will be useful.It will take few minutes to hold the broken parts.Dont put overload of food stuff on the rejoined tray.But it will hold the basic load.

Before going to buy any parts directly.
Go through this troubleshooting help links.

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This is list of refrigerator problems, which is normally faced in refrigerator.
You can go through the details, by clicking the link below:---

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Refrigerator is not cooling properly?
http://technoanswers.blogspot.com/2011/06/refrigerator-is-not-cooling-properly.html
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Both refrigerator and freezer not cooling properly in refrigerator?
http://technoanswers.blogspot.com/2011/06/both-refrigerator-and-freezer-not.html
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The ice maker not working: ---
http://technoanswers.blogspot.com/2011/06/ice-maker-stopped-working.html

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Compressor not running on refrigerator?
http://technoanswers.blogspot.com/2011/10/compressor-not-running-on-refrigerator.html
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Water dispenser not working on refrigerator?
http://technoanswers.blogspot.com/2011/10/water-dispenser-not-working-on_19.html

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Ice maker stopped making ice?

http://alltypesofpartsreplacing.blogspot.com/2011/10/ice-maker-stopped-making-ice.html

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Water Overflows in Ice maker and freezes inside?

http://alltypesofpartsreplacing.blogspot.com/2011/10/water-overflows-in-ice-maker-and.html

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How to replace Ice maker assembly?

http://alltypesofpartsreplacing.blogspot.com/2011/10/how-to-replace-ice-maker-assembly.html

These will help.

Thanks,.