No-Library (pure JS), HTML, CSS, JavaScript
jQuery 1.9.1, HTML, CSS, JavaScript
This is a simple Twitter Bootstrap 3 template. You can fork it to get a ready to use Bootstrap 3 fiddle.
jQuery 2.1.0, HTML, CSS, JavaScript
SO answer: http://stackoverflow.com/questions/12455699/show-hide-table-column-with-colspan-using-jquery
jQuery 1.10.1, HTML, CSS, JavaScript
jQuery 1.7.2, HTML, CSS, JavaScript
jQuery 1.7.1, HTML, CSS, JavaScript
Positioning of different HTML elements within div elements with horizontal and vertical alignments
A simple method of fixing the header and first column of a table using CSS and a few lines of JQuery, feel free to comment, make suggestions or use the code in your own projects