A one-second google search turned up this: http://stackoverflow.com/questions/1118198/how-can-you-figure-out-the-highest-z-index-in-your-document http://stackov

A one-second google search turned up this: http://stackoverflow.com/questions/1118198/how-can-you-figure-out-the-highest-z-index-in-your-document http://stackoverflow.com/questions/1118198/how-can-you-figur... They should just use that to find the highest z-index, then add 1. Totally future proof.