So from the home page, i have a link that goes to a products listing page. The product page has expand/collapse divs.
I need the appropriate div to expand depending
The answers suggested here are valid, but...
Be extremely careful when using the window.location.hash as it is in a jQuery selector because this could lead to a XSS vulnerability. $() can also create an HTML element and with a carefully constructed hash value, someone could execute arbitrary JavaScript code.
For example
http://my-website.com/about#'>
If my-websites.com/about page uses the window.location.hash inside a jQuery selector, that onerror code would end up getting executed.