MultiHeader (include #cspan) and setColumnHidden on firefox

Suite and Optimus Suite 5
#1

i can’t find solution about this problem.

please help me

my source example

grid.setHeader(“item,#cspan,option”);
grid.attachHeader(“a,b,c”);

grid.setColumnHidden(1,false);

i think that this source makes grid like this
Header1 : item , option
Header2 : a , c

but result is

Header1 : item (colspan) , option
Header2 : a c

please help me…~~~~

#2

setColumnHidden() method is incompatible with column merging. To archive desire grid structure just do not use #cspan in 2nd column.