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/*
TopZIndex plugin for jQuery
Version: 1.2
http://topzindex.googlecode.com/
Copyright (c) 2009-2011 Todd Northrop
http://www.speednet.biz/
October 21, 2010
Calculates the highest CSS z-index value in the current document
or specified set of elements. Provides ability to push one or more
elements to the top of the z-index. Useful for dynamic HTML
popup windows/panels.
Based on original idea by Rick Strahl
http://west-wind.com/weblog/posts/876332.aspx
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version, subject to the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
------------------------------------------------------*/
(function ($) {
$.topZIndex = function (selector) {
/// <summary>
/// Returns the highest (top-most) zIndex in the document
/// (minimum value returned: 0).
/// </summary>
/// <param name="selector" type="String" optional="true">
/// (optional, default = "*") jQuery selector specifying
/// the elements to use for calculating the highest zIndex.
/// </param>
/// <returns type="Number">
/// The minimum number returned is 0 (zero).
/// </returns>
return null;
/*return Math.max(0, Math.max.apply(null, $.map(((selector || "*") === "*")? $.makeArray(document.getElementsByTagName("*")) : $(selector),
function (v) {
return parseFloat($(v).css("z-index")) || null;
}
)));*/
};
$.fn.topZIndex = function (opt) {
/// <summary>
/// Increments the CSS z-index of each element in the matched set
/// to a value larger than the highest current zIndex in the document.
/// (i.e., brings all elements in the matched set to the top of the
/// z-index order.)
/// </summary>
/// <param name="opt" type="Object" optional="true">
/// (optional) Options, with the following possible values:
/// increment: (Number, default = 1) increment value added to the
/// highest z-index number to bring an element to the top.
/// selector: (String, default = "*") jQuery selector specifying
/// the elements to use for calculating the highest zIndex.
/// </param>
/// <returns type="jQuery" />
// Do nothing if matched set is empty
if (this.length === 0) {
return this;
}
opt = $.extend({increment: 1}, opt);
// Get the highest current z-index value
var zmax = $.topZIndex(opt.selector),
inc = opt.increment;
// Increment the z-index of each element in the matched set to the next highest number
return this.each(function () {
this.style.zIndex = (zmax += inc);
});
};
})(JoomlaShine.jQuery);
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