1- when the page is open not all the sizer are display sizer 4 and 1 
2- when selecting a model the focus is on the combox box so
 if trying to scroll down or up the model  change.i think not very stable
3-does the data field need to be a textcontrol since the user will never change
it
4-select a model from the model menu , hit close , select it again from the model menu :
the parameters don't appear

------>bugs [1,2,3,4] fixed---9.46 am 10/22/2008

5- plot data2D theory not working for all models
---->bugs[5] fixed
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1. close button does not show up properly when selecting model.
static text is showing when  randomly when slecting the model to fit for the first time

2.