Need expert comment on copying Ajax Dlls to bin

I have a huge web application that is Altas-based. I have only 2 weeks to add some new functionality to it so there is no time to upgrade it to Ajax.
That will be in the next project. In the mean time I still need to use some Ajax functionality just to show the sort images as described inhttp://mattberseth.com/blog/2007/09/how_to_improve_column_sort_pre.html

So I copied the Ajax DLLs into bin where the Atlas DLLs currently are. Then I changed the web.config as seen below.

Question:

Will that have any types of negative bearing on my other asp controls such as asp:gridview, asp:label etc...? Any caveats I should be aware of? Thanks

If in web.config <pages>

<controls> <addtagPrefix="asp"namespace="System.Web.UI"assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>

</controls>

</pages>

You won't have any issues at all with existing controls.

Just make sure you're website is running in fulltrust, and that your host allows full trust.