Help Bubble VisualForce Code

Here Important thing is helptext should be used
with <apex:pageblocksectionitem>

<br /><apex:page tabstyle="Account" standardcontroller="Account"> <apex:sectionheader title="Validation Test Page"> </apex:sectionHeader><apex:form> <apex:pageblock title="" id="pageBlock"> <apex:pageblockbuttons location="top"> <apex:pageblocksection columns="1"> <apex:pageblocksectionitem helptext="Enter Account Name"> <apex:outputlabel value="Name : "></apex:outputLabel> <apex:inputfield value="{!Account.Name}"> </apex:pageblocksectionitem> <apex:pageblocksectionitem helptext="Enter Description here"> <apex:outputlabel value="Description : "></apex:outputLabel> <apex:inputfield value="{!Account.Description}"> </apex:pageblocksectionitem> </apex:pageblocksection> <apex:commandbutton value="Save" action="{!save}"></apex:commandButton></apex:pageBlockButtons></apex:pageBlock></apex:form></apex:page><br /><br />