Embed multiple syntax highlight

I'm using ace editor with "html" mode for web programming as a web IDE. I can highlight code for HTMl, CSS and JavaScript. It works nicely, thank you for it. This is my code:

`editor.getSession().setMode('ace/mode/html');`

I'd like to embed coffeescript and typescript syntax highlight support too when using the

` ...some code... `
` ...some code... `

tags in the editor. I am aware that Ace does have modes for these languages but they are separate files (mode-coffee.js and mode-typescript.js) and I don't know how I could embed these into mode-html.js to support the above. The code is rather complicated. Could you kindly help me out? I've been studying these files for days now and I'd appreciate any help.

Thank you.