(function($) {'use strict';
$.fn.topProgressBar = function(options) {
var opts = $.extend({}, {
}, options);
var bar = getTopProgressBar(opts);
$(bar).prependTo(document.body);
$(window).on("scroll", function() {
var p = getScrollPercent();
$(bar).css("width", p);
});
}
function getTopProgressBar(opts) {
var bar = document.createElement("div")
bar.className = "tx-scroll-progress-bar";
return bar;
}
function getScrollPercent() {
var h = document.documentElement,
b = document.body,
st = 'scrollTop',
sh = 'scrollHeight';
return parseInt((h[st] || b[st]) / ((h[sh] || b[sh]) - h.clientHeight) * 100) + "%";
}
})(jQuery);