crm 4 隐藏自定义 toolbar

//隐藏指定title按钮
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;
    }
  }
}

The unsupported way of doing this could be 

1) Find HomePage.aspx in your crm server.
2) Open it in visual studio or any other editor.
3) Find the javascript code function window.onload() in the page.
4) Add the following code to it 

function window.onload()
{
    HandleBackButtonIssues(_currentTypeCode);
    
    // code to hide send deactivate option
  
 var deactiviateElement = document.getElementById(‘_MIdoActioncrmGrid2deactivate‘);
    if (deactiviateElement != null) {
        deactiviateElement.style.display = ‘none‘;
    }   
         
    // end of code
}
But remember it is unsupported !