I had a requirement for a series of select boxes that required the related one to only allow selections above the first. I created a little utility function that enables and disables the options based on a function you supply. Usage is pretty simple. Pass in the first and second select as jQuery objects, then pass in your function that evaluates whether an option is enabled or not.
Coming from a .net background I must admit to missing many of the features that the framework provides like Hastables, Dictionaries and Lists. I've just come up with a really simple dictionary class that I use to hold results from my id parsing routine.
Read more...Here is my first freely available jQuery plug-in. There are a few more to follow soon including a form builder and a file explorer 
I know there are a million calendar selectors out there but I needed one that covered historical dates (1800-2100). It displays either as a in place calendar in the page or as a drop down aka. combo box style.
Selectors in JQuery are extremely powerful. This is a simple page to test them and as a quick reminder as to what’s available.
N.B. This treeview has now been replaced by a more advanced sortable one on LiveFlex.co.uk called Sortable Treeview.
I am currently writing my third cms where I work. It’s very much modern and the architecture is pretty snazzy. I’ve not used much of asp.net default stuff, favouring my own slimline versions of their bloated packages like ajax, MVC, and the user account system. I’ve pulled most stuff in from my old cms’ and extended it in a number of ways.