Website feedback: Tooltips for functions in the php.net function reference

The functions are listed on the lefthand side of the web page in the php.netfunctionreference. For example at ( http://php.net/manual/en/function.in-array.php) you will see a list of functions on the left. It would be superb if when hovering over one of these function names a tooltip would appear showing the short description of the function. e.g. hovering over 'array_fill' would give the tooltip: "array_fill — Fill an array with values" Thanks :D