Dear Abinash, Can you please post your code that caused this problem to define the problem and solve it correctly?

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Khaled Moawad --- http://kholyos.blogspot.com

Dear Khaled,
On click of a button (From Parent Window), I call the below JS fuction, which opens up the Popup window. Please note I modified the size of the popup here.
//OPEN THE COMMENTS WINDOW
function openAnalysis(strPath)
{
//Added For Defect Id : UAT 242
var elem = document.getElementById('leftmenutree');
elem.style.display = "block";
elem = document.getElementById('dummyimage');
elem.style.display = "none";
elem = document.getElementById('imgdummyHide');
elem.style.display = "none";
elem = document.getElementById('testLayer1');
if(elem.style.display != "none")
{
toggle('testLayer1','/LA_New');
document.getElementById("imgHide").src="../../Images/show.jpg";
}

if (screen.width==1024)
{
var left = (screen.width/2)-138;
//Added For Defect Id : UAT 377
isPopupOpen1 = window.open(strPath,"","height=712,width=640,top=0,left=" + left +",resizable=yes,minimize=yes,scrollbars=1,resizable=0")
}
else
{
var leftHigher = (screen.width/2)-10;
//Added For Defect Id : UAT 377
isPopupOpen1 = window.open(strPath,"","height=967,width=640,top=0,left=" + leftHigher +",resizable=yes,minimize=yes,scrollbars=1,resizable=0")
}
}

And when the Popup is window I resize the parent window. Below is the code which I have written in the HTML of the popup. This is present just before the body tag ends.

<script language="javascript">
//This resizes the parent screen on load of the page
opener.resizeTo((screen.height-390),(screen.width-279));
toggleLube('tblRemarks','imgRemarks');
</script>
</BODY>