from iframe page event change css of parent

Question

I have homepage containing middle_overlay div which is initially not visible .Also , it contains"iframe capture" there is click button on page,on click event of button i want to make middle_overlay div visible, but from another page can i change how can i change css?

HTML:

<div id="middle_overlay">
</div>

<div id="middle">
    <iframe id="middle_frame" src="capture.php" frameborder='0' border='0' style="border:0;" seamless>
    </iframe>
</div> 

JQuery ::

$(document).ready(function()
{
$('#Monthly_Report').click(function(){
alert('monthly report clicked');
$('#middle_overlay').css('display','block');                                

});



});

Answer 1

window.parent.$('#middle_overlay').css('display','block'); 

Note this will only work if your iframe and parent page are from the same domain.