使用按钮更新使用XSL设置样式的XML元素

As a newbie to XSL, minimal exposure to XML, I'm having trouble figuring out how to integrate the two with HTML. I'd like to use two buttons to update two elements captured in an XML document and have it update the elements displayed using the XSL stylesheet. I've provided snippets of the code below.As a newbie to XSL, minimal exposure to XML, I'