http://stackoverflow.com/questions/8981064/jquery-validate-resetform-doesnt-reset-the-onfocus-validation
http://stackoverflow.com/questions/8995923/jquery-validate-difficulty-understanding-errorplacement
http://stackoverflow.com/questions/9003105/validate-form-on-the-tab-which-is-not-selected
http://stackoverflow.com/questions/8836969/add-custom-error-condition-and-general-error-message-for-jquery-validate-plugin
Checking what happens with x,null or x,0 points in stacked flot lines
jQuery 1.5.2, HTML, CSS, JavaScript
No-Library (pure JS), HTML, CSS, JavaScript
jQuery 3.1.1, HTML, CSS, JavaScript
jQuery 1.4.4, HTML, CSS, JavaScript