[TYPO3-dev] "Filter by character" pagination

[Typo kraut]

Hi,
Im printing data into a dropdown menu like this:
(Show.html)
<select onchange="location = this.options[this.selectedIndex].value;">
	<f:for each="{city.streets}" as="street">
		<option value="<f:uri.action controller="Street"  action="show"  arguments="{street : street}" />" >{street.name}</option>
	</f:for>
</select>

now i need a pagination from "A" to "Z". Clicking on e.g. "B" then filters the data to only show entries starting with "B"
but im not shure in which file to put the logic and how to call it...