This is a sample code to give a font color with a good contrast for a given background color. That php code snipped could be useful in case you give your users the option to set a custom background but not the font color (to avoid too many...

If you have tried to use the excellent animateClass extension to jquery maybe you have found that doesn't work in IE. For example this sample code changes dynamically a h1 element from class "inicial" to class "final" producing a nice...