 
     render: ->
         strategies = @props.strategies?.toJS() ? []
-        # strategies = ['facebook', 'google', 'twitter', 'github']   # for testing.
+        ## strategies = ['facebook', 'google', 'twitter', 'github']   # for testing.
         <div style={@props.style}>
             {@render_heading()}
             <div>

        style.textAlign = 'center'
        cname = misc.capitalize(name)
        title = <span><Icon name={name} /> {cname}</span>
        <a href={url} key={name} style={fontSize:'20pt'}>
            <Tip placement='bottom' title={title} tip={"Use #{cname} to sign into your CoCalc account instead of an email address and password."}>
                <Icon name={name} style={style} />
            </Tip>

            size = '2x'
        style = misc.copy(@styles[name])
        style.display = 'inline-block'
        style.padding = '6px'
        style.borderRadius = '50%'
        style.width = '50px'
        style.height=  '50px'
