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enableLoadingItem for dhtmlxTreeGrid?

hi,

is there any possibility to show a loading item when opening a node in the treegrid like it is possible for the dhtmlxtree?
I tried to write a function and attach it to the onOpenStart event, but this overwrote the opening functionality of the tree...

thanks!

It possible to show any kind of message by usign onOpenStart and onOpenEnd events, but creating an additional HTML element inside a grid is a tricky process. 
Probably you can show loading in some less problematic way, for example.

var temp;
grid.attachEvent("onOpenStart",function(id){
   temp = grid.getItemText(id);
   grid.setItemText(id,"Loading...");
   return true;
})
grid.attachEvent("onOpenEnd",function(id){
   grid.setItemText(id,temp);
   return true;
})