[jQuery] Open a particular menu in accordion based on value passed to it

Hi All, I am using JQuery accordion to create a menu box , my problem is that say if I have 4 containers (Divs/menu ) and at runtime I want to open one of them depending upon the variable passed. I know using the option "active:2" will open the 2nd container but can anyone please tell me what is

[jQuery] How do we change the css stylesheet of selected accordion header

Can anyone please tell me ,how do we change the css stylesheet of selected accordion header. I want that the selected accordion should have different background color and other which are not selected should have different background color.

[jQuery] how do we change the css stylesheet of selected accordion header ???

Can anyone please tell me ,how do we achieve that the selected accordion header should have different background color and other headers which are not selected should have different background color. I am naive with Jquery , jquery generates some kind of CSS associated ..how do we overide tha