diff --git a/docs/assets/css/bootstrap.css b/docs/assets/css/bootstrap.css
index 52dbf7a1c0..f8edafa3b1 100644
--- a/docs/assets/css/bootstrap.css
+++ b/docs/assets/css/bootstrap.css
@@ -4603,91 +4603,19 @@ input[type="submit"].btn.btn-mini {
 }
 
 .tooltip.top {
-  margin-top: -2px;
+  margin-top: -3px;
 }
 
 .tooltip.right {
-  margin-left: 2px;
+  margin-left: 3px;
 }
 
 .tooltip.bottom {
-  margin-top: 2px;
+  margin-top: 3px;
 }
 
 .tooltip.left {
-  margin-left: -2px;
-}
-
-.tooltip.top .tooltip-arrow {
-  bottom: -10px;
-  left: 50%;
-  margin-left: -10px;
-  border-top: 10px solid #cccccc;
-  border-top: 10px solid rgba(0, 0, 0, 0.2);
-  border-right: 10px solid transparent;
-  border-left: 10px solid transparent;
-}
-
-.tooltip.top .tooltip-arrow:after {
-  bottom: 1px;
-  left: -9px;
-  border-top: 9px solid #ffffff;
-  border-right: 9px solid transparent;
-  border-left: 9px solid transparent;
-}
-
-.tooltip.left .tooltip-arrow {
-  top: 50%;
-  right: -10px;
-  margin-top: -10px;
-  border-top: 10px solid transparent;
-  border-bottom: 10px solid transparent;
-  border-left: 10px solid #cccccc;
-  border-left: 10px solid rgba(0, 0, 0, 0.2);
-}
-
-.tooltip.left .tooltip-arrow:after {
-  right: 1px;
-  bottom: -9px;
-  border-top: 9px solid transparent;
-  border-bottom: 9px solid transparent;
-  border-left: 9px solid #ffffff;
-}
-
-.tooltip.bottom .tooltip-arrow {
-  top: -10px;
-  left: 50%;
-  margin-left: -10px;
-  border-right: 10px solid transparent;
-  border-bottom: 10px solid #cccccc;
-  border-bottom: 10px solid rgba(0, 0, 0, 0.2);
-  border-left: 10px solid transparent;
-}
-
-.tooltip.bottom .tooltip-arrow:after {
-  top: 1px;
-  left: -9px;
-  border-right: 9px solid transparent;
-  border-bottom: 9px solid #f5f5f5;
-  border-left: 9px solid transparent;
-}
-
-.tooltip.right .tooltip-arrow {
-  top: 50%;
-  left: -10px;
-  margin-top: -10px;
-  border-top: 10px solid transparent;
-  border-right: 10px solid #cccccc;
-  border-right: 10px solid rgba(0, 0, 0, 0.2);
-  border-bottom: 10px solid transparent;
-}
-
-.tooltip.right .tooltip-arrow:after {
-  bottom: -9px;
-  left: 1px;
-  border-top: 9px solid transparent;
-  border-right: 9px solid #ffffff;
-  border-bottom: 9px solid transparent;
+  margin-left: -3px;
 }
 
 .tooltip-inner {
@@ -4706,6 +4634,40 @@ input[type="submit"].btn.btn-mini {
   position: absolute;
   width: 0;
   height: 0;
+  border-color: transparent;
+  border-style: solid;
+}
+
+.tooltip.top .tooltip-arrow {
+  bottom: 0;
+  left: 50%;
+  margin-left: -5px;
+  border-top-color: #000000;
+  border-width: 5px 5px 0;
+}
+
+.tooltip.right .tooltip-arrow {
+  top: 50%;
+  left: 0;
+  margin-top: -5px;
+  border-right-color: #000000;
+  border-width: 5px 5px 5px 0;
+}
+
+.tooltip.left .tooltip-arrow {
+  top: 50%;
+  right: 0;
+  margin-top: -5px;
+  border-left-color: #000000;
+  border-width: 5px 0 5px 5px;
+}
+
+.tooltip.bottom .tooltip-arrow {
+  top: 0;
+  left: 50%;
+  margin-left: -5px;
+  border-bottom-color: #000000;
+  border-width: 0 5px 5px;
 }
 
 .popover {
@@ -4745,92 +4707,6 @@ input[type="submit"].btn.btn-mini {
   margin-right: 10px;
 }
 
-.popover.top .arrow {
-  bottom: -10px;
-  left: 50%;
-  margin-left: -10px;
-  border-top: 10px solid #cccccc;
-  border-top: 10px solid rgba(0, 0, 0, 0.2);
-  border-right: 10px solid transparent;
-  border-left: 10px solid transparent;
-}
-
-.popover.top .arrow:after {
-  bottom: 1px;
-  left: -9px;
-  border-top: 9px solid #ffffff;
-  border-right: 9px solid transparent;
-  border-left: 9px solid transparent;
-}
-
-.popover.right .arrow {
-  top: 50%;
-  left: -10px;
-  margin-top: -10px;
-  border-top: 10px solid transparent;
-  border-right: 10px solid #cccccc;
-  border-right: 10px solid rgba(0, 0, 0, 0.2);
-  border-bottom: 10px solid transparent;
-}
-
-.popover.right .arrow:after {
-  bottom: -9px;
-  left: 1px;
-  border-top: 9px solid transparent;
-  border-right: 9px solid #ffffff;
-  border-bottom: 9px solid transparent;
-}
-
-.popover.bottom .arrow {
-  top: -10px;
-  left: 50%;
-  margin-left: -10px;
-  border-right: 10px solid transparent;
-  border-bottom: 10px solid #cccccc;
-  border-bottom: 10px solid rgba(0, 0, 0, 0.2);
-  border-left: 10px solid transparent;
-}
-
-.popover.bottom .arrow:after {
-  top: 1px;
-  left: -9px;
-  border-right: 9px solid transparent;
-  border-bottom: 9px solid #f5f5f5;
-  border-left: 9px solid transparent;
-}
-
-.popover.left .arrow {
-  top: 50%;
-  right: -10px;
-  margin-top: -10px;
-  border-top: 10px solid transparent;
-  border-bottom: 10px solid transparent;
-  border-left: 10px solid #cccccc;
-  border-left: 10px solid rgba(0, 0, 0, 0.2);
-}
-
-.popover.left .arrow:after {
-  right: 1px;
-  bottom: -9px;
-  border-top: 9px solid transparent;
-  border-bottom: 9px solid transparent;
-  border-left: 9px solid #ffffff;
-}
-
-.popover .arrow {
-  position: absolute;
-  width: 0;
-  height: 0;
-}
-
-.popover .arrow:after {
-  position: absolute;
-  display: inline-block;
-  width: 0;
-  height: 0;
-  content: "";
-}
-
 .popover-title {
   padding: 8px 14px;
   margin: 0;
@@ -4838,7 +4714,7 @@ input[type="submit"].btn.btn-mini {
   font-weight: normal;
   line-height: 18px;
   background-color: #f5f5f5;
-  border-bottom: 1px solid #e5e5e5;
+  border-bottom: 1px solid #dcdcdc;
   -webkit-border-radius: 5px 5px 0 0;
      -moz-border-radius: 5px 5px 0 0;
           border-radius: 5px 5px 0 0;
@@ -4854,6 +4730,81 @@ input[type="submit"].btn.btn-mini {
   margin-bottom: 0;
 }
 
+.popover .arrow,
+.popover .arrow:after {
+  position: absolute;
+  display: inline-block;
+  width: 0;
+  height: 0;
+  border-color: transparent;
+  border-style: solid;
+}
+
+.popover .arrow:after {
+  z-index: -1;
+  content: "";
+}
+
+.popover.top .arrow {
+  bottom: -10px;
+  left: 50%;
+  margin-left: -10px;
+  border-top-color: #ffffff;
+  border-width: 10px 10px 0;
+}
+
+.popover.top .arrow:after {
+  bottom: -1px;
+  left: -11px;
+  border-top-color: rgba(0, 0, 0, 0.2);
+  border-width: 11px 11px 0;
+}
+
+.popover.right .arrow {
+  top: 50%;
+  left: -10px;
+  margin-top: -10px;
+  border-right-color: #ffffff;
+  border-width: 10px 10px 10px 0;
+}
+
+.popover.right .arrow:after {
+  bottom: -11px;
+  left: -1px;
+  border-right-color: rgba(0, 0, 0, 0.2);
+  border-width: 11px 11px 11px 0;
+}
+
+.popover.bottom .arrow {
+  top: -10px;
+  left: 50%;
+  margin-left: -10px;
+  border-bottom-color: #f5f5f5;
+  border-width: 0 10px 10px;
+}
+
+.popover.bottom .arrow:after {
+  top: -1px;
+  left: -11px;
+  border-bottom-color: rgba(0, 0, 0, 0.2);
+  border-width: 0 11px 11px;
+}
+
+.popover.left .arrow {
+  top: 50%;
+  right: -10px;
+  margin-top: -10px;
+  border-left-color: #ffffff;
+  border-width: 10px 0 10px 10px;
+}
+
+.popover.left .arrow:after {
+  right: -1px;
+  bottom: -11px;
+  border-left-color: rgba(0, 0, 0, 0.2);
+  border-width: 11px 0 11px 11px;
+}
+
 .thumbnails {
   margin-left: -20px;
   list-style: none;
diff --git a/docs/assets/css/docs.css b/docs/assets/css/docs.css
index c5d92b613e..bbdff228dc 100644
--- a/docs/assets/css/docs.css
+++ b/docs/assets/css/docs.css
@@ -598,6 +598,17 @@ form.bs-docs-example {
   line-height: 18px;
 }
 
+/* Tooltips */
+.bs-docs-tooltip-examples {
+  text-align: center;
+  margin: 0 0 10px;
+  list-style: none;
+}
+.bs-docs-tooltip-examples li {
+  display: inline;
+  padding: 0 10px;
+}
+
 /* Popovers */
 .bs-docs-example-popover {
   padding-bottom: 24px;
diff --git a/docs/javascript.html b/docs/javascript.html
index c17af37cd8..7fb2ceff5d 100644
--- a/docs/javascript.html
+++ b/docs/javascript.html
@@ -753,10 +753,20 @@ $('a[data-toggle="tab"]').on('shown', function (e) {
   <p>Inspired by the excellent jQuery.tipsy plugin written by Jason Frame; Tooltips are an updated version, which don't rely on images, use CSS3 for animations, and data-attributes for local title storage.</p>
   <p>Hover over the links below to see tooltips:</p>
   <div class="bs-docs-example tooltip-demo">
-    <p class="muted" style="margin-bottom: 0;">Tight pants next level keffiyeh <a href="#" rel="tooltip" title="first tooltip">you probably</a> haven't heard of them. Photo booth beard raw denim letterpress vegan messenger bag stumptown. Farm-to-table seitan, mcsweeney's fixie sustainable quinoa 8-bit american apparel <a href="#" rel="tooltip" title="Another tooltip">have a</a> terry richardson vinyl chambray. Beard stumptown, cardigans banh mi lomo thundercats. Tofu biodiesel williamsburg marfa, four loko mcsweeney's cleanse vegan chambray. A really ironic artisan <a href="#" rel="tooltip" title="Another one here too">whatever keytar</a>, scenester farm-to-table banksy Austin <a href="#" rel="tooltip" title="The last tip!">twitter handle</a> freegan cred raw denim single-origin coffee viral.
+    <p class="muted" style="margin-bottom: 0;">Tight pants next level keffiyeh <a href="#" rel="tooltip" title="Default tooltip">you probably</a> haven't heard of them. Photo booth beard raw denim letterpress vegan messenger bag stumptown. Farm-to-table seitan, mcsweeney's fixie sustainable quinoa 8-bit american apparel <a href="#" rel="tooltip" title="Another tooltip">have a</a> terry richardson vinyl chambray. Beard stumptown, cardigans banh mi lomo thundercats. Tofu biodiesel williamsburg marfa, four loko mcsweeney's cleanse vegan chambray. A really ironic artisan <a href="#" rel="tooltip" title="Another one here too">whatever keytar</a>, scenester farm-to-table banksy Austin <a href="#" rel="tooltip" title="The last tip!">twitter handle</a> freegan cred raw denim single-origin coffee viral.
     </p>
   </div>
 
+  <h3>Four directions</h3>
+  <div class="bs-docs-example tooltip-demo">
+    <ul class="bs-docs-tooltip-examples">
+      <li><a href="#" rel="tooltip" data-placement="top" title="Tooltip on top">Tooltip on top</a></li>
+      <li><a href="#" rel="tooltip" data-placement="right" title="Tooltip on right">Tooltip on right</a></li>
+      <li><a href="#" rel="tooltip" data-placement="bottom" title="Tooltip on bottom">Tooltip on bottom</a></li>
+      <li><a href="#" rel="tooltip" data-placement="left" title="Tooltip on left">Tooltip on left</a></li>
+    </ul>
+  </div>
+
 
   <hr class="bs-docs-separator">
 
diff --git a/docs/templates/pages/javascript.mustache b/docs/templates/pages/javascript.mustache
index d9ef68c7de..f80389ced8 100644
--- a/docs/templates/pages/javascript.mustache
+++ b/docs/templates/pages/javascript.mustache
@@ -685,10 +685,20 @@ $('a[data-toggle="tab"]').on('shown', function (e) {
   <p>{{_i}}Inspired by the excellent jQuery.tipsy plugin written by Jason Frame; Tooltips are an updated version, which don't rely on images, use CSS3 for animations, and data-attributes for local title storage.{{/i}}</p>
   <p>{{_i}}Hover over the links below to see tooltips:{{/i}}</p>
   <div class="bs-docs-example tooltip-demo">
-    <p class="muted" style="margin-bottom: 0;">{{_i}}Tight pants next level keffiyeh <a href="#" rel="tooltip" title="first tooltip">you probably</a> haven't heard of them. Photo booth beard raw denim letterpress vegan messenger bag stumptown. Farm-to-table seitan, mcsweeney's fixie sustainable quinoa 8-bit american apparel <a href="#" rel="tooltip" title="Another tooltip">have a</a> terry richardson vinyl chambray. Beard stumptown, cardigans banh mi lomo thundercats. Tofu biodiesel williamsburg marfa, four loko mcsweeney's cleanse vegan chambray. A really ironic artisan <a href="#" rel="tooltip" title="Another one here too">whatever keytar</a>, scenester farm-to-table banksy Austin <a href="#" rel="tooltip" title="The last tip!">twitter handle</a> freegan cred raw denim single-origin coffee viral.{{/i}}
+    <p class="muted" style="margin-bottom: 0;">{{_i}}Tight pants next level keffiyeh <a href="#" rel="tooltip" title="Default tooltip">you probably</a> haven't heard of them. Photo booth beard raw denim letterpress vegan messenger bag stumptown. Farm-to-table seitan, mcsweeney's fixie sustainable quinoa 8-bit american apparel <a href="#" rel="tooltip" title="Another tooltip">have a</a> terry richardson vinyl chambray. Beard stumptown, cardigans banh mi lomo thundercats. Tofu biodiesel williamsburg marfa, four loko mcsweeney's cleanse vegan chambray. A really ironic artisan <a href="#" rel="tooltip" title="Another one here too">whatever keytar</a>, scenester farm-to-table banksy Austin <a href="#" rel="tooltip" title="The last tip!">twitter handle</a> freegan cred raw denim single-origin coffee viral.{{/i}}
     </p>
   </div>{{! /example }}
 
+  <h3>{{_i}}Four directions{{/i}}</h3>
+  <div class="bs-docs-example tooltip-demo">
+    <ul class="bs-docs-tooltip-examples">
+      <li><a href="#" rel="tooltip" data-placement="top" title="Tooltip on top">Tooltip on top</a></li>
+      <li><a href="#" rel="tooltip" data-placement="right" title="Tooltip on right">Tooltip on right</a></li>
+      <li><a href="#" rel="tooltip" data-placement="bottom" title="Tooltip on bottom">Tooltip on bottom</a></li>
+      <li><a href="#" rel="tooltip" data-placement="left" title="Tooltip on left">Tooltip on left</a></li>
+    </ul>
+  </div>{{! /example }}
+
 
   <hr class="bs-docs-separator">
 
diff --git a/less/mixins.less b/less/mixins.less
index 3b99f4061d..957e7faccc 100644
--- a/less/mixins.less
+++ b/less/mixins.less
@@ -508,75 +508,7 @@
   margin-top: (@navbarHeight - @elementHeight) / 2;
 }
 
-// Popover arrows
-// -------------------------
-// For tipsies and popovers
-#popoverArrow {
-  .top(@arrowWidth: 10px, @color: rgba(0,0,0,.2)) {
-    bottom: -@arrowWidth;
-    left: 50%;
-    margin-left: -@arrowWidth;
-    border-left: @arrowWidth solid transparent;
-    border-right: @arrowWidth solid transparent;
-    border-top: @arrowWidth solid #ccc;
-    border-top: @arrowWidth solid @color;
-    &:after {
-      border-left: @arrowWidth - 1 solid transparent;
-      border-right: @arrowWidth - 1 solid transparent;
-      border-top: @arrowWidth - 1 solid #fff;
-      bottom: 1px;
-      left: -@arrowWidth + 1;
-    }
-  }
-  .right(@arrowWidth: 10px, @color: rgba(0,0,0,.2)) {
-    top: 50%;
-    left: -@arrowWidth;
-    margin-top: -@arrowWidth;
-    border-top: @arrowWidth solid transparent;
-    border-bottom: @arrowWidth solid transparent;
-    border-right: @arrowWidth solid #ccc;
-    border-right: @arrowWidth solid @color;
-    &:after {
-      border-top: @arrowWidth - 1 solid transparent;
-      border-bottom: @arrowWidth - 1 solid transparent;
-      border-right: @arrowWidth - 1 solid #fff;
-      bottom: -@arrowWidth + 1;
-      left: 1px;
-    }
-  }
-  .bottom(@arrowWidth: 10px, @color: rgba(0,0,0,.2)) {
-    top: -@arrowWidth;
-    left: 50%;
-    margin-left: -@arrowWidth;
-    border-left: @arrowWidth solid transparent;
-    border-right: @arrowWidth solid transparent;
-    border-bottom: @arrowWidth solid #ccc;
-    border-bottom: @arrowWidth solid @color;
-    &:after {
-      border-left: @arrowWidth - 1 solid transparent;
-      border-right: @arrowWidth - 1 solid transparent;
-      border-bottom: @arrowWidth - 1 solid #f5f5f5;
-      top: 1px;
-      left: -@arrowWidth + 1;
-    }
-  }
-  .left(@arrowWidth: 10px, @color: rgba(0,0,0,.2)) {
-    top: 50%;
-    right: -@arrowWidth;
-    margin-top: -@arrowWidth;
-    border-top: @arrowWidth solid transparent;
-    border-bottom: @arrowWidth solid transparent;
-    border-left: @arrowWidth solid #ccc;
-    border-left: @arrowWidth solid @color;
-    &:after {
-      border-top: @arrowWidth - 1 solid transparent;
-      border-bottom: @arrowWidth - 1 solid transparent;
-      border-left: @arrowWidth - 1 solid #fff;
-      bottom: -@arrowWidth + 1;
-      right: 1px;
-    }
-  }
-}
+
 
 // Grid System
 // -----------
diff --git a/less/popovers.less b/less/popovers.less
index 2d58a9a241..147f54a5db 100644
--- a/less/popovers.less
+++ b/less/popovers.less
@@ -25,25 +25,6 @@
   &.bottom  { margin-top: 10px; }
   &.left    { margin-right: 10px; }
 
-  // Call the mixin for the arrows
-  &.top .arrow    { #popoverArrow > .top(); }
-  &.right .arrow  { #popoverArrow > .right(); }
-  &.bottom .arrow { #popoverArrow > .bottom(); }
-  &.left .arrow   { #popoverArrow > .left();  }
-
-  // Common arrow styles
-  .arrow {
-    position: absolute;
-    width: 0;
-    height: 0;
-    &:after {
-      position: absolute;
-      display: inline-block;
-      width: 0;
-      height: 0;
-      content: "";
-    }
-  }
 }
 
 .popover-title {
@@ -52,8 +33,8 @@
   font-size: 14px;
   font-weight: normal;
   line-height: 18px;
-  background-color: #f5f5f5;
-  border-bottom: 1px solid #e5e5e5;
+  background-color: @popoverTitleBackground;
+  border-bottom: 1px solid darken(@popoverTitleBackground, 10%);
   .border-radius(5px 5px 0 0);
 }
 
@@ -63,3 +44,73 @@
     margin-bottom: 0;
   }
 }
+
+// Arrows
+.popover .arrow,
+.popover .arrow:after {
+  position: absolute;
+  display: inline-block;
+  width: 0;
+  height: 0;
+  border-color: transparent;
+  border-style: solid;
+}
+.popover .arrow:after {
+  content: "";
+  z-index: -1;
+}
+
+.popover {
+  &.top .arrow {
+    bottom: -@popoverArrowWidth;
+    left: 50%;
+    margin-left: -@popoverArrowWidth;
+    border-width: @popoverArrowWidth @popoverArrowWidth 0;
+    border-top-color: @popoverArrowColor;
+    &:after {
+      border-width: @popoverArrowOuterWidth @popoverArrowOuterWidth 0;
+      border-top-color: @popoverArrowOuterColor;
+      bottom: -1px;
+      left: -@popoverArrowOuterWidth;
+    }
+  }
+  &.right .arrow {
+    top: 50%;
+    left: -@popoverArrowWidth;
+    margin-top: -@popoverArrowWidth;
+    border-width: @popoverArrowWidth @popoverArrowWidth @popoverArrowWidth 0;
+    border-right-color: @popoverArrowColor;
+    &:after {
+      border-width: @popoverArrowOuterWidth @popoverArrowOuterWidth @popoverArrowOuterWidth 0;
+      border-right-color: @popoverArrowOuterColor;
+      bottom: -@popoverArrowOuterWidth;
+      left: -1px;
+    }
+  }
+  &.bottom .arrow {
+    top: -@popoverArrowWidth;
+    left: 50%;
+    margin-left: -@popoverArrowWidth;
+    border-width: 0 @popoverArrowWidth @popoverArrowWidth;
+    border-bottom-color: @popoverTitleBackground;
+    &:after {
+      border-width: 0 @popoverArrowOuterWidth @popoverArrowOuterWidth;
+      border-bottom-color: @popoverArrowOuterColor;
+      top: -1px;
+      left: -@popoverArrowOuterWidth;
+    }
+  }
+  &.left .arrow {
+    top: 50%;
+    right: -@popoverArrowWidth;
+    margin-top: -@popoverArrowWidth;
+    border-width: @popoverArrowWidth 0 @popoverArrowWidth @popoverArrowWidth;
+    border-left-color: @popoverArrowColor;
+    &:after {
+      border-width: @popoverArrowOuterWidth 0 @popoverArrowOuterWidth @popoverArrowOuterWidth;
+      border-left-color: @popoverArrowOuterColor;
+      bottom: -@popoverArrowOuterWidth;
+      right: -1px;
+    }
+  }
+}
diff --git a/less/tooltip.less b/less/tooltip.less
index 8593e2b5f3..89143decab 100644
--- a/less/tooltip.less
+++ b/less/tooltip.less
@@ -3,6 +3,7 @@
 // --------------------------------------------------
 
 
+// Base class
 .tooltip {
   position: absolute;
   z-index: @zindexTooltip;
@@ -12,15 +13,13 @@
   font-size: 11px;
   .opacity(0);
   &.in     { .opacity(80); }
-  &.top    { margin-top:  -2px; }
-  &.right  { margin-left:  2px; }
-  &.bottom { margin-top:   2px; }
-  &.left   { margin-left: -2px; }
-  &.top .tooltip-arrow    { #popoverArrow > .top(); }
-  &.left .tooltip-arrow   { #popoverArrow > .left(); }
-  &.bottom .tooltip-arrow { #popoverArrow > .bottom(); }
-  &.right .tooltip-arrow  { #popoverArrow > .right(); }
+  &.top    { margin-top:  -3px; }
+  &.right  { margin-left:  3px; }
+  &.bottom { margin-top:   3px; }
+  &.left   { margin-left: -3px; }
 }
+
+// Wrapper for the tooltip content
 .tooltip-inner {
   max-width: 200px;
   padding: 3px 8px;
@@ -30,8 +29,42 @@
   background-color: @black;
   .border-radius(4px);
 }
+
+// Arrows
 .tooltip-arrow {
   position: absolute;
   width: 0;
   height: 0;
+  border-color: transparent;
+  border-style: solid;
+}
+.tooltip {
+  &.top .tooltip-arrow {
+    bottom: 0;
+    left: 50%;
+    margin-left: -@tooltipArrowWidth;
+    border-width: @tooltipArrowWidth @tooltipArrowWidth 0;
+    border-top-color: @tooltipArrowColor;
+  }
+  &.right .tooltip-arrow {
+    top: 50%;
+    left: 0;
+    margin-top: -@tooltipArrowWidth;
+    border-width: @tooltipArrowWidth @tooltipArrowWidth @tooltipArrowWidth 0;
+    border-right-color: @tooltipArrowColor;
+  }
+  &.left .tooltip-arrow {
+    top: 50%;
+    right: 0;
+    margin-top: -@tooltipArrowWidth;
+    border-width: @tooltipArrowWidth 0 @tooltipArrowWidth @tooltipArrowWidth;
+    border-left-color: @tooltipArrowColor;
+  }
+  &.bottom .tooltip-arrow {
+    top: 0;
+    left: 50%;
+    margin-left: -@tooltipArrowWidth;
+    border-width: 0 @tooltipArrowWidth @tooltipArrowWidth;
+    border-bottom-color: @tooltipArrowColor;
+  }
 }
diff --git a/less/variables.less b/less/variables.less
index 9e7146a754..394d10636c 100644
--- a/less/variables.less
+++ b/less/variables.less
@@ -198,6 +198,20 @@
 @infoBorder:              darken(spin(@infoBackground, -10), 7%);
 
 
+// Tooltips and popovers
+// -------------------------
+@tooltipArrowWidth:       5px;
+@tooltipArrowColor:       #000;
+
+@popoverArrowWidth:       10px;
+@popoverArrowColor:       #fff;
+@popoverTitleBackground:  #f5f5f5;
+
+// Special enhancement for popovers
+@popoverArrowOuterWidth:  @popoverArrowWidth + 1;
+@popoverArrowOuterColor:  rgba(0,0,0,.2);
+
+
 
 // GRID
 // --------------------------------------------------