Extjs 4, grid.getView().on('bodyscroll', function(event, target)

[mr.Eugens]

There are 2 tables with same number of notes and joint store. It is nesessury to synchronize the position of vertical scroll and the current line.
For extjs3 the code was

grid1.on('bodyscroll', function(scrollLeft, scrollTop){
     grid2.getView().scroller.scrollTo('top', scrollTop);
});

grid2.on('bodyscroll', function(scrollLeft, scrollTop){
     grid1.getView().scroller.scrollTo('top', scrollTop);
});

For extjs4 I did the following (I had to enter additional conditions to avoid resonance)

Ext.FocusManager.enable();
...
grid1.getView().on('bodyscroll', function(event, target){
var foc_el = Ext.FocusManager.focusedCmp;
if (foc_el)
{
  if ((foc_el.id=='grid1')|| (foc_el.id == grid1.getView().id))
  {
    grid2.setScrollTop(target.scrollTop);
  }
}
});

grid2.getView().on('bodyscroll', function(event, target){
var foc_el = Ext.FocusManager.focusedCmp;
if (foc_el)
{
  if ((foc_el.id=='grid2')|| (foc_el.id == grid2.getView().id))
  {
    grid1.setScrollTop(target.scrollTop);
  }
}
});

But for example whole scrolling under IE7 foc_el - null . Is there any optimal method?
Sorry for my english.

[mr.Eugens]

Question in unequivocal definition of focus of the current table.

[mr.Eugens]

grid_ds_deliv.getView().on('bodyscroll', function(event, target){
if (gl_gscr=='') gl_gscr = 'g1';
if (gl_gscr == 'g1') grid_ds_pld.setScrollTop(target.scrollTop);
gl_gscr = '';
});

grid_ds_pld.getView().on('bodyscroll', function(event, target){
if (gl_gscr=='') gl_gscr = 'g2';
if (gl_gscr == 'g2') grid_ds_deliv.setScrollTop(target.scrollTop);
gl_gscr = '';
});

[webfriend13]

I ran into same issue. What is the solution to this problem?

[val360]

        dataGrid.getView().on('bodyscroll', function (event,target) {		gridA.scrollByDeltaY(target.scrollTop - gridB.getView().getEl().getScroll().top);
	});
	entryGrid.getView().on('bodyscroll', function (event, target) {
		gridB.scrollByDeltaY(target.scrollTop - gridA.getView().getEl().getScroll().top);
	});