Dialog modal

Dialog modal


I have the following code -

$('#dlg').dialog({                                 open: function () {                                 },                                 width: 800,                                 height: 500,                                 title: 'Test'//json[0]                                 modal: false                             });

When modal attribute set to True the dialog shows and there is an horizontal strip crossing the browser window behind it, like a div tag with 100% width...

When modal is set to false it looks okay.

Any idea why ?