Webspinner Tech Blog

REF

Here's the helper function courtesy of Simon Willison:

function addLoadEvent(func)
{ var oldonload = window.onload;
  if (typeof window.onload != 'function')
  { window.onload = func; }
  else
  { window.onload = function()
    { oldonload();
      func();
    }
  }
}

To use the helper, call it with the name of our target function:

addLoadEvent(msgPgLoaded);

Now our 'msgPgLoaded' function will not fire until the page is fully loaded. Perfect!