DrDoc - 6:36 pm on Dec 7, 2012 (gmt 0)

The problem is that the JavaScript code completes much faster than the browser takes to redirect.

A very simple fix is to make your code a complete if...else statement:

if (data.redirect) { 
  window.location.href = data.redirect; 
} else { 
  if (data.content) { 
    $("#tableData").html(data.content); 
    $("#dashboardData").html(data.dashboard); 
  } 
  simpleDialog(part)  
}