thx charles and nc...

so it can not use label/tetxbox from gridview in javascript...  is the javascript only take html data?

ok, i have use label5 in html, so the value of costlabel in gridview is taken by label5 in html like this code:

dim cost as label=me.formview1.findcontrol("costlabel") 

label5.text=cost.text 

so in the javascript, i can put label5 to that...

ok, i have new problem that relation with this javascript... 

http://forums.asp.net/p/1208084/2126979.aspx#2126979

pls... help if u want... it seem dificult...

but pls reply that problem in this thread...ok

many thx...