Making an Accordion Control?

I'm using JQuery to create an Accordion control. The problem that I'm having is that when I run my webapp, 1 section of the Accordion control is open. I have a total of 4 sections (<div>'s) but everytime I run it, the 1st <div> is always open. I'm using it as a Sidebar menu control and want all the sections to be closed by default. How can this be done?

Thanks,