[TYPO3] Combobox List menu ion tt_news

[Xatucans]

Hi everybody, I'm trying to display the List mode of my tt_news as a
combobox. I've changed the List template and I've put all the titles of my
tt_news in a combobox,

[...]
<option value="">###NEWS_TITLE###<option>
[...]

now I need to put the url of the Single view as the Value of the
combobox's option and I don't know how to do that. Can anybody help me?
thanks