Hello,

This is probably something pretty basic, but I am lost.  I have a custom object called Opportunity_Stage__c.  I created a custom controller because I want to have some function that opens various sections based on a user click.  However, I cannot save the controller because I keep getting the error:

Error: Unknown property 'Opportunity_Stage_Manager__cStandardController.Opportunity'

Can anyone help me understand why I am getting this?  My VF page and controller are below:

VF Page:

<apex:page standardController="Opportunity_Stage__c" tabStyle="Opportunity" ShowHeader="TRUE" extensions="EditOppMgmtController">

<apex:form >
<apex:actionFunction name="stage1Status" action="{!Stage1}" rerender="NewQualifiers" onComplete="StatusIcon();"/>
<apex:actionFunction name="stage2Status" action="{!Stage2}" rerender="NewQualifiers" onComplete="StatusIcon();"/>
<apex:actionFunction name="stage3Status" action="{!Stage3}" rerender="NewQualifiers" onComplete="StatusIcon();"/>
<apex:actionFunction name="stage4Status" action="{!Stage4}" rerender="NewQualifiers" onComplete="StatusIcon();"/>
<apex:actionFunction name="stage5Status" action="{!Stage5}" rerender="NewQualifiers" onComplete="StatusIcon();"/>

<apex:outputPanel id="msgs">
<apex:pageMessages />
</apex:outputPanel>

<apex:repeat value="{!Opportunity_Stage_Manager__c}" var="opp">

<apex:outputPanel rendered="{!IF(opp.Opportunity_Type__c = 'New Business','true','false')}">

<!-- HEADER ROWS -->

<table columns="2" width="100%" >
<tr>
<td width="15%" >
Sales Rep:
</td>
<td width="30%" >
{!Opportunity.Owner.Name}
</td>
<td width="5%">
&nbsp;
</td>
<td align="right" width="25%">
<apex:commandLink id="Stage1n" value="Stage 1 - Identify Target" onComplete="stage1Status();" />&nbsp;&nbsp;&nbsp;
</td>
<td width="20%" >
<hr style="height:15px; border:none;
margin:0;" align="left" width="0%"/>
</td>
<td width="5%">
{!IF(opp.S1_New_Completed__c=null,0,opp.S1_New_Completed__c)}%
</td>
</tr>

<tr>
<td width="15%" >
Account Name:
</td>
<td width="30%" >
{!Opportunity.Account.Name}
</td>
<td width="5%">
&nbsp;
</td>
<td align="right" width="25%">
<apex:commandLink id="Stage2n" value="Stage 2 - Qualify Target" onComplete="stage2Status();" />&nbsp;&nbsp;&nbsp;
</td>
<td width="20%" style="border: 2px solid silver;padding:none">
<hr style="height:15px; border:none;
margin:0;" align="left" width="0%"/>
</td>
<td width="5%">
{!IF(opp.S2_New_Completed__c=null,0,opp.S2_New_Completed__c)}%
</td>
</tr>

</table>

<!--QUALIFIER TABLES-->

<apex:outputPanel id="NewQualifiers">
&nbsp;<br/>
&nbsp;<br/>
<apex:outputPanel rendered="{!IF((Stage1Qual=True || (Stage1Qual=False && Stage2Qual=False && Stage3Qual=False && Stage4Qual=False && Stage5Qual=False)),'true','false')}">
<table width="100%">
<tr >
<td colspan="6">
<div >STAGE 1 - IDENTIFY TARGET</div><br></br>
</td>
</tr>
<tr >
<td width="1%" colspan="3" align="center">
Stages
</td>
<td width="5%">
Status
</td>
<td width="10%">
Date Completed
</td>
<td width="35%">
Comments
</td>
</tr>

<tr valign="middle" >
<td colspan="6"><br/></td>
</tr>

<tr valign="middle" >
<td width="1%">
&nbsp;
</td>
<td width="1%">
<img src="/s.gif" alt="" class="helpOrb" title="Why this stage?"/>
</td>
<td width="29%">
Cconfirmed
</td>
<td width="5%" align="center">

<div id="StatusIcon" >
<img src="/servlet/servlet.FileDownload?file=015S0000000PrP7" class="icon default" id="R" name="s1q1n"/>
<img src="/servlet/servlet.FileDownload?file=015S0000000PrP8" class="icon" id="Y" name="s1q1n"/>
<img src="/servlet/servlet.FileDownload?file=015S0000000PrP6" class="icon" id="G" name="s1q1n"/>
</div>
</td>
<td width="10%" align="center">
<apex:inputField value="{!opp.S1Q1_New_Date__c}" />
</td>
<td width="35%">
<apex:inputField value="{!opp.S1Q1_New_Comments__c}" Style="width:98%"/>
</td>
<td width="1%">
<apex:inputField value="{!opp.S1Q1_New__c}" styleClass="s1q1n" style="visibility:hidden; width:10%;"/>
</td>
</tr>

<tr valign="middle" >
<td colspan="6"><br/></td>
</tr>
<tr valign="middle" >
<td colspan="6"><br/></td>
</tr>

<tr valign="middle">
<td width="1%">
<img src="/servlet/servlet.FileDownload?file=015S0000000S3wj" alt="Essential" title="Essential"/>
</td>
<td width="1%">
<img src="/s.gif" alt="" class="helpOrb" title="What are the client's Needs"/>
</td>
<td width="29%">
Client shared a problem
</td>
<td width="5%" align="center">

<div id="StatusIcon" >
<img src="/servlet/servlet.FileDownload?file=015S0000000PrP7" class="icon default" id="R" name="s1q2n"/>
<img src="/servlet/servlet.FileDownload?file=015S0000000PrP8" class="icon" id="Y" name="s1q2n"/>
<img src="/servlet/servlet.FileDownload?file=015S0000000PrP6" class="icon" id="G" name="s1q2n"/>
</div>
</td>
<td width="10%" align="center">
<apex:inputField value="{!opp.S1Q2_New_Date__c}" />
</td>
<td width="35%">
<apex:inputField value="{!opp.S1Q2_New_Comments__c}" Style="width:98%"/>
</td>
<td width="1%">
<apex:inputField value="{!opp.S1Q2_New__c}" styleClass="s1q2n" style="visibility:hidden; width:10%;"/>
</td>
</tr>

</table>

</apex:outputPanel>

</apex:repeat>
</apex:form>

</apex:page>

Controller:

public class EditOppMgmtController{

public EditOppMgmtController(ApexPages.StandardController stdcontroller) {}

public boolean Stage1Qual {get; set;}
public boolean Stage2Qual {get; set;}
public boolean Stage3Qual {get; set;}
public boolean Stage4Qual {get; set;}
public boolean Stage5Qual {get; set;}

public void Stage1() {
Stage1Qual = true;
Stage2Qual = false;
Stage3Qual = false;
Stage4Qual = false;
Stage5Qual = false;
}
public void Stage2() {
Stage1Qual = false;
Stage2Qual = true;
Stage3Qual = false;
Stage4Qual = false;
Stage5Qual = false;
}
public void Stage3() {
Stage1Qual = false;
Stage2Qual = false;
Stage3Qual = true;
Stage4Qual = false;
Stage5Qual = false;
}
public void Stage4() {
Stage1Qual = false;
Stage2Qual = false;
Stage3Qual = false;
Stage4Qual = true;
Stage5Qual = false;
}
public void Stage5() {
Stage1Qual = false;
Stage2Qual = false;
Stage3Qual = false;
Stage4Qual = false;
Stage5Qual = true;
}
}