Reference ASP.NET control by ID in JavaScript?

Question

When ASP.NET controls are rendered their ids sometimes change, like if they are in a naming container. Button1 may actually have an id of ctl00_ContentMai

Answer 1

Oh, and I also found this, in case anyone else is having this problem.

Use a custom jQuery selector for asp.net controls: http://john-sheehan.com/blog/custom-jquery-selector-for-aspnet-webforms/