Customize Membership Button with Javascript

Site URL: https://www.mamascoach.com

Hey all,

I'm working on integrating subscription access to a site I'm working on for a friend. I love the css and customization I currently have utilizing an entire image block as a link. That being said, I've discovered that there is a member's block in squarespace they want you to use to direct customers to their javascript popup. I'd like for the signup popup to popup from clicking my image block rather than their prepackaged member's blocks.

Website is still in it's infancy, but here is the URL: www.mamascoach.com, password = password

Above you can see the image blocks I'd like to use as links. 

Below is the member block button that I'd like to use the javascript from.

I may be wrong, but I believe this is the javascript being triggered by that button:

<script type="application/json" id="bootstrap-data">
         
          {"loginDialogConfig":{"headerText":"Welcome to Mama's Coach","subheaderText":""},"createAccountDialogConfig":{"headerText":"Create Account","subheaderText":"","shouldShowReCaptcha":false,"reCaptchaSiteKey":"6LcLKWYaAAAAALAdf1Q4ri_EcSPPN4yRW0xxHdaX"},"xsrfToken":"MXw2MTJlYzZiZWVmMjU2YjQyM2UxYWI3MmY6MTYzMzI5NjkyOTkzMHxzQ0l4ZzdMSThKTXRIVDQwcUh5dlJQZ1lDeWVJNWdEb3hhTHdJcDRMMXYtZ0RMb2IxZUZNckRBV2ROM2hITW1R","loginOrigin":"member_area_block","memberArea":{"websiteId":"612ec6beef256b423e1ab72f","memberAreaId":"615a02f7961c542198d1a56d","groupId":"615a02f7961c542198d1a56d","title":"BASIC","paywallProductId":"3a7e5c8b-7243-4405-b07d-34b7fc4f459f","purchaseType":"PAID","aclIds":[],"joinButtonVisibility":"SHOW_JOIN_BUTTON"},"pricingOptionId":"fba0e268-a240-4c86-9517-e96ec58d5784","originUrlPath":"","pricingOption":{"id":"fba0e268-a240-4c86-9517-e96ec58d5784","price":{"currencyCode":"USD","value":1499,"decimalValue":"14.99","fractionalDigits":2},"onSale":false,"subscriptionPlan":{"productId":"3a7e5c8b-7243-4405-b07d-34b7fc4f459f","pricingOptionId":"fba0e268-a240-4c86-9517-e96ec58d5784","billingPeriod":{"value":1,"unit":"MONTH"},"planVersionId":"2a644235-ba82-472f-87b2-53848756357b","numBillingCycles":0},"subscribable":true},"websiteId":"612ec6beef256b423e1ab72f"}
        </script>

I'm pretty desperate for help. 

Thank you so much!

@tuanphan I know you always have so many helpful things to say! 

Hi,

You want to use script code from Sign up button in screenshot, for other buttons?