Bugfix: Scrolling did not work when you had to scroll back to top

.gitignore

@@ -0,0 +1,122 @@
+
+# Created by https://www.gitignore.io/api/osx,webstorm,node,bower
+
+### OSX ###
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
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+.Trashes
+.VolumeIcon.icns
+
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+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+
+### WebStorm ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+.idea
+
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+.idea/workspace.xml
+.idea/tasks.xml
+.idea/dictionaries
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+
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+.idea/dataSources.local.xml
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+.idea/dynamic.xml
+.idea/uiDesigner.xml
+
+# Gradle:
+.idea/gradle.xml
+.idea/libraries
+
+# Mongo Explorer plugin:
+.idea/mongoSettings.xml
+
+## File-based project format:
+*.iws
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/
+
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+.idea_modules/
+
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+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
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+
+
+### Node ###
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+lib-cov
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+.grunt
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+### Bower ###
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+.bower-registry
+.bower-tmp

lib/angular-smooth-scroll.js

@@ -99,9 +99,10 @@
 				startLocation 	= getScrollLocation(),
 				endLocation 	= getEndLocation(element),
 				timeLapsed 		= 0,
-				distance 		= endLocation - startLocation,
+				distance = Math.abs(endLocation - startLocation),
 				percentage,
 				position,
+				positionSign = Math.sign(endLocation - startLocation),
 				scrollHeight,
 				internalHeight;
 
@@ -110,12 +111,12 @@
 			 */
 			var stopAnimation = function () {
 				currentLocation = getScrollLocation();
-				if(containerPresent) {
+				if (containerPresent) {
 					scrollHeight = container.scrollHeight;
-					internalHeight = container.clientHeight + currentLocation;
+					internalHeight = container.clientHeight + currentLocation * positionSign;
 				} else {
 					scrollHeight = document.body.scrollheight;
-					internalHeight = window.innerHeight + currentLocation;
+					internalHeight = window.innerHeight + currentLocation * positionSign;
 				}
 
 				if (
@@ -140,9 +141,9 @@
 			var animateScroll = function () {
 				timeLapsed += 16;
 				percentage = ( timeLapsed / duration );
-				percentage = ( percentage > 1 ) ? 1 : percentage;
-				position = startLocation + ( distance * getEasingPattern(easing, percentage) );
-				if(containerPresent) {
+				percentage = Math.min(percentage, 1);
+				position = startLocation + (distance * getEasingPattern(easing, percentage)) * positionSign;
+				if (containerPresent) {
 					container.scrollTop = position;
 				} else {
 					window.scrollTo( 0, position );