/**
 * Handles auto scrolling the expansion content.
 * @param index The index to scroll
 */
var autoScroll = function() {
	function e() {
		"number" == typeof l && clearTimeout(l), l = setTimeout(function() {
			autoScroll.aScrolls[autoScroll.getIndex(index)] === !0 && t(i, "bottom")
		}, 5e3)
	}

	function t(r, c, a) {
		if (0 === r.clientHeight) return void window.addEventListener("load", function() {
			t(r, c, a)
		});
		var s = r,
			u = s.scrollHeight - s.clientHeight;
		switch (
			a = "boolean" == typeof a ? a : !1,
			"number" == typeof l && clearTimeout(l),
			s.removeEventListener("scroll", e),
			s.clientHeight == s.scrollHeight && setTimeout(function() {
				s.clientHeight != s.scrollHeight && (u = s.scrollHeight - s.clientHeight)
			}, 20), c) {
			case "bottom":
				n = setInterval(function() {
					s.scrollTop < u ? s.scrollTop += 1 : (clearInterval(n), n = void 0, setTimeout(function() {
						t(i, "top")
					}, 500))
				}, 80);
				break;
			case "top":
				o = setInterval(function() {
					s.scrollTop > 0 ? s.scrollTop -= 5 : (clearInterval(o), o = void 0, a === !0 && setTimeout(function() {
						t(i, "bottom")
					}, 500))
				}, 5);
				break;
			case "pause":
				"number" == typeof n ? (clearInterval(n), e(), s.addEventListener("scroll", e)) : "number" == typeof o && (clearInterval(o), e(), s.addEventListener("scroll", e))
		}
	}
	var n, o, l, i, index;
	return {
		aScrolls: [],
		aScroll: function(index, val){
			index = this.getIndex(index);
			autoScroll.aScrolls[index] = val;
			return autoScroll.aScrolls[index];
		},
		getIndex: function(index){
				switch(index){
					case '1-0':
						return 0;
						break;
					case '1-1':
						return 1;
						break;
					case '2-0':
						return 2;
						break;
					case '2-1':
						return 3;
						break;
					default:
						break;
			}
		},
		reset: function(index) {
			var indexVal = autoScroll.getIndex(index);
			i = document.getElementById("isi-scroll-expanded-" + index);
			i && t(i, "top")
		},
		pause: function(index) {
			var indexVal = autoScroll.getIndex(index);
			i = document.getElementById("isi-scroll-expanded-" + index);
			i && t(i, "pause")
		},
		init: function(index) {
			index = index;
			var indexVal = autoScroll.getIndex(index);
			i = document.getElementById("isi-scroll-expanded-" + index);
			t(i, "bottom");
			this.aScrolls[indexVal] = 0;

			"selection" in document && i.addEventListener("selectstart",
			function(e) {
				e.preventDefault()
			}), i.addEventListener("mousedown", function() {
				t(i, "pause")
			}), i.addEventListener("wheel", function() {
				t(i, "pause")
			})
		}
	}
}();