Client value to server ** Resolved **

[vbud]

I dont know if this at all possible, but i need to retrieve values from client side to server side. I've been trying to use javascript but with no hope till now. my problem is that i have a datagrid and when the user clicks on a given row i retrieve the value of the primary key for the current row and store it on client side using javascript. now on a postback i need to retrieve this value and use it in my code behind. how do i achieve that? anyone please?

I have been trying to use document.cookie to store the value but dont know how to retrieve in on server side. it also seems that javascript cannot store values in session variables, or am i wrong here?

thanx.