title: how use scroll with simpleModal plugin
body: <p>I'm using simpleModal plugin
  <a href="http://www.ericmmartin.com/projects/simplemodal/" rel="nofollow">http://www.ericmmartin.com/projects/simplemodal/</a> 
  when the text in the dialog is too long, I try to scroll, but the entire page is scrolling, even when using modal:true.</p>
  
  <p>so I can't see the end of the dialog , I try define maxHeight - but seem with no effect.</p>
  
  <p>any idea?</p>
  
  <p>code:</p>
  
  <pre><code> function loadDialog(Code,vrsnNum)
   {
    vrsnNum=vrsnNum-1;
    $.get(
     "/ajaxVerision.asp", 
     {Code: Code,VerisionNum: vrsnNum},
      function(data)
       {
       $(".CrnrPager").html(data);
       }
      );
  
    $.get(
     "/ajaxVerisionNext.asp", 
     {Code: Code,VerisionNum: vrsnNum},
      function(data)
        {
        $("#sp1").html(data);
        }
     );
  
    $('#basic-modal-content').modal({maxHeight: 400,autoPosition : true, position: ['20%','25%']});
   }
  </code></pre>