multiplying values of Two Number Fields & display in 3rd Field

Request help in multiplying values in Two Fields (UnitPrice__c & QuantitySold__c}

& display the value in edit mode in 3rd Field (TotalSale__c)

All the 03 Fields are Number type

-----------------------------------VF Page------------------------------------------------------------------------------

<apex:inputField id="IDUnitPrice" value="{!opportunity.UnitPrice__c}" ></apex:inputField>
<apex:inputField id="IDQtySold" value="{!opportunity.QuantitySold__c}" onkeyup="javascript&colon;CalculateAmount();">

</apex:inputField>
<apex:inputField id="IDTotalSale" label="Total Sale" value="{!opportunity.TotalSale__c}"></apex:inputField>
------------------------------------Script -----------------------------------------------------------------------------------

function CalculateAmount()
      {

         var Price = VALUE(UnitPrice__c.);
         var Qty = VALUE(QuantitySold__c);

         var Amount = Price * Qty;

         VALUE(TotalSale__c) = Amount;
      }

January 1, 2013
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Best Answer chosen by Admin (Salesforce Developers)

kiranmutturu
this is the sample code

<apex:page standardController="lead">
<apex:form>

<apex:inputField id="id1" value="{!lead.NumberofLocations__c}"/>

<apex:inputField id="id2" value="{!lead.Total_Activites__c}" onblur="fix(document.getElementById('{!$component.id1}').value,this.value)"/>

<apex:inputField id="id3" value="{!lead.NumberOfEmployees}"/>

<script>

function fix(var1,var2){
alert(var1+"****"+var2);
document.getElementById('{!$component.id3}').value = var1 * var2;

}

</script>

</apex:form>
</apex:page>