JQuery :: Find A Div From Iframe?

i want to find a div from a iframe..

i am using jquery code for it

that is:

function EmptyDiv() {
var frame = $('#frameUpload').get(0).contentDocument.body;
$('div', frame).html('');
// $('div', frame).css('background-color', 'red');
//$("#frameUpload").contents().find("div").innerhtml="";
}

its working fine in Mozilla bit in Ie it showing that error:

Microsoft jscript run time error.. get(.......).contentDocument.body is null or not an object