Hiding Custom ISV.Config Buttons in CRM 4.0

I needed to hide/show my ISV.config buttons (note the ToolTip is the key here):

 <Entity name="new_myentity">  
  <ToolBar>  
   <Button AccessKey="P" Icon="/_imgs/button_approve.ico"   
     ValidForCreate="1" ValidForUpdate="1"   
     JavaScript="ApproveApplication();">  
    <Titles>  
     <Title LCID="1033" Text="Approve" />  
    </Titles>  
    <ToolTips>  
     <ToolTip LCID="1033" Text="Approve"/>  
    </ToolTips>  
   </Button>  
  </ToolBar>  
 </Entity>  

So I found some sources that led me to this function that I call in the Entity’s OnLoad event:

 // hide ISV buttons that don't apply

 function hideISVButton(buttonTitle) {
   var comps = document.getElementsByTagName('li');
   for (var i = 0; i < comps.length; i++) {
     if (comps[i].title == buttonTitle)
     {
       comps[i].style.display = "none";
       break;
     }
   }
 }

***Interesting to note about the ISV.Config JavaScript…it calls a function that is also defined in the Entity’s OnLoad…a much cleaner alternative to real JS in the ISV.Config file:

 ApproveApplication = function() {
 
  // Your function code here
 
 }