display hidden div onload

I have a C# web page that contains several checkboxes.  Some of the checkboxes when clicked will display a hidden div containing more detailed checkboxes.  Once they are finished the user clicks save and the data is sent to the database.  My problem is if they come back to that page to edit their information I cant get the div's to appear if the checkbox is set.  I am setting the onclcik events in the Page_PreRender event.:

        protected void Page_PreRender(object sender, System.EventArgs e)
        {
            this.Page.Form.Attributes.Add("onload", "javascript:DiplayBlock('div_surgical_sub');");



Ideas on what i can do to accomplish this????? I tried doing sometihng like the following but was unsuccessful::

this.Page.Form.Attributes.Add("onload", "javascript:DiplayBlock('div_surgical_sub');");
LVL 1
DB_FuryAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

DB_FuryAuthor Commented:
nevermind:



Page.ClientScript.RegisterStartupScript(this.GetType(), "clientScript", "javascript:DiplayBlock('div_surgical_sub');", true);
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
DB_FuryAuthor Commented:
I figured itout
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
C#

From novice to tech pro — start learning today.