Adding titles to icons

[oleteacher]

Found this on a long night search;) Been looking for something like this...

Question please: How does one use titles with icons the icons?

iconizeIcon: '../images/hide.png',
normalizeIcon: '../images/minimize.png',
maximizeIcon: '../images/maximize.png',
closeIcon: "../images/closeit.png",`

Cannot seem to find how to accomplish this.

Also, if do decide to work on this project in future, please consider responsive option.

Thank you,

Susan