Popup window problem

[4345487]

Hi,

I have a page with a link to open a popup window created with JavaScript I will insert the code below it works OK in IE6 and FireFox but when I run it in IE7 the popup window always opens behind the parent window did anybody else have this problem.

Thanks with any help.

// This function calls the popup window.
function searchDivisionList(url)
{
var winId=window.open("",url,"width=440,height=640,menubar=no,location=no,toolbar=no,status=no,directories=no,resizable=no,left=550,top=0");

//set focus to the new window
winId.focus();
}