zIndex for placeholder span is set wrong

[lvostinar]

specifically this line:

if (isNaN(zIndex) || !zIndex) zIndex = 1;

is wrong, because default value of zIndex is auto which is default layer (same as zIndex 0)

so should be

if (isNaN(zIndex) || !zIndex) zIndex = 0;

[thisandagain]

Awesome. Thanks for the catch. Would you mind sending along a PR?

[mcshaz]

by setting z-ndex to 1 (i.e. this commit was removed - obviously had some downstream effects), the placeholder span will be given a value of zindex+1 (or 2). any jquery-ui dialogs, including datepickers will have a z-index of 1 if the z-index is not specifically set. the result of this is that the 'placeholder' span will sit on top of any dialog overlying the input. I can mock up in jsfiddle if you would like