change time text

[AMBIENTE1]

Hi Wvega,
thank you for your script, It's very useful! My question... Is some way change text hours in dropdown menu like:

$("a.ui-corner-all:contains('10:00')").text("10 - 11 hours");
$("a.ui-corner-all:contains('11:00')").text("11 - 12 hours");
$("a.ui-corner-all:contains('12:00')").text("12 - 13 hours");
??
I need time slots for ordering in eshop. When I tried to call thit after document.ready with setTimeout 100, error: Uncaught TypeError: n.viewport is undefined
Thank you again.