How can I show the output a function?

I'm trying to just display the output (return result) of a function using document.write, but it doesn't seem to work. Here's a really simple example...

function some_function(abc)
  {
  return abc;
  }

document.write(some_function('Hello world'));

Code (markup):

Yet if I replace "document.write" with "alert", it works just fine (except I don't want an alert box...)

function some_function(abc)
  {
  return abc;
  }

alert(some_function('Hello world'));

Code (markup):

 

It works for me:

<script type="text/javascript">
function some_function(abc)
  {
  return abc;
  }

document.write(some_function('Hello world'));
</script>

HTML:

 

Try wrapping the code in Try-Catch and see what your browser has to say:

<script language="javascript">

try
{
    function some_function(abc)
    {
        return abc;
    }

    document.write(some_function('Hello world'));
}
catch(e)
{
    alert(e);
}

</script>

HTML:

 

Solved it with "document.getElementById('divname').innerHTML=function();" & creating labeled div tags.

Thanks though.