created an attachment (id=157575)
screenshot

description:
expression buttion position in data item which is dragged in crosstab is not correct 

build number: 2.5.2.v20100129-0630

steps to reproduce:
1, new a crosstab binding with cube
2, drag a data item in crosstab's level area
3, check the position of expression buttion in data item dialog

actual result:
see screenshot

error log:
fixed it.
verified in 2.5.2 v20100208-0630