onebuttoninstaller/onebuttoninstaller/ext/spinner.inc

<!--
    spinner.inc

    Copyright (c) 2015 - 2018 Andreas Schmidhuber
    All rights reserved.

    Uses spin.js by Felix Gnass (fgnass) at http://spin.js.org

	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions are met:

	1. Redistributions of source code must retain the above copyright notice, this
	   list of conditions and the following disclaimer.
	2. Redistributions in binary form must reproduce the above copyright notice,
	   this list of conditions and the following disclaimer in the documentation
	   and/or other materials provided with the distribution.

	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
	ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
	ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 -->
<!-- attach spinner -->
<script type="text/javascript">
function spinner() {
        var opts = {
            lines: 10, // The number of lines to draw
            length: 7, // The length of each line
            width: 4, // The line thickness
            radius: 10, // The radius of the inner circle
            corners: 1, // Corner roundness (0..1)
            rotate: 0, // The rotation offset
            color: '#4D4D4D', // #rgb or #rrggbb
            opacity: 0.45, // Opacity of the lines
            speed: 1, // Rounds per second
            trail: 60, // Afterglow percentage
            shadow: false, // Whether to render a shadow
            hwaccel: false, // Whether to use hardware acceleration
            className: 'spinner', // The CSS class to assign to the spinner
            zIndex: 2e9, // The z-index (defaults to 2000000000)
            top: '50%', // Top position relative to parent
            left: '50%', // Left position relative to parent
            position: 'fixed', // Element positioning
        };
        var target = document.getElementById('spinner_main');
        var spinner = new Spinner(opts).spin(target);
        $('#spinner_overlay').show();
}
</script>
<div id="spinner_main"></div>
<div id="spinner_overlay" style="display: none; background-color: white; position: fixed; left:0; top:0; height:100%; width:100%; opacity: 0.25;"></div>
<!-- end of spinner -->