diff --git a/examples/simple.js b/examples/simple.js
index 28043ac..549d886 100644
--- a/examples/simple.js
+++ b/examples/simple.js
@@ -9,6 +9,6 @@ function onChange(v){
   console.log(v);
 }
 
-// React.render(<Slider marks={["一","二","三","四","五"]} index={3}/>, document.getElementById('__react-content'));
-// React.render(<Slider className='rc-slider' step={20}/>, document.getElementById('__react-content'));
+// React.render(<div style={{width:400,margin:100}}><Slider marks={["一","二","三","四","五"]} defaultIndex={2} /></div>, document.getElementById('__react-content'));
+// React.render(<div style={{width:400,margin:100}}><Slider className='rc-slider' step={20}/></div>, document.getElementById('__react-content'));
 React.render(<div style={{width:400,margin:100}}><Slider onChange={onChange}/></div>, document.getElementById('__react-content'));
diff --git a/src/Slider.jsx b/src/Slider.jsx
index df2b423..b88882a 100644
--- a/src/Slider.jsx
+++ b/src/Slider.jsx
@@ -33,7 +33,7 @@ function getValueFromIndex(props) {
   }
   if (marksLen > 0) {
     value = ((props.max - props.min) / (marksLen - 1)) * (index);
-    value = value.toFixed(5);
+    value = value.toFixed(5) / 1;
   }
   return value;
 }
@@ -299,6 +299,7 @@ const Slider = React.createClass({
       tooltipVisible = true;
     } else {
       events = {
+        onClick: this.showTooltip.bind(this, true),
         onMouseEnter: this.showTooltip.bind(this, true),
         onMouseLeave: this.showTooltip.bind(this, false),
       };