How to add inline button

Hello all,
In SuiteScript 1.0 we were able to add buttons to NetSuite forms in inline html fields. These buttons would then usually bring up a window with some other info. So now I am trying to do the same type of thing 2.0.

I have a User Event script and the button is showing up on the form.

function beforeLoad(scriptContext) {

//Components button
var newInlineHtmlField = scriptContext.form.addField
({id: 'custpage_pe_componentsbtn_inline',
type: 'inlinehtml',
label: ' '
});
newInlineHtmlField.defaultValue = '<br/><input id="btnPEComponentsList" onclick="onclick_showComponentList();" type="button" name="btnPECompList" value=" Components " style="width:150px; height:30px; cursor: pointer; background-color:#378FFA;border:1px solid #9DBFF2; color:#FFFFFF; font-weight: bold;">';