I have an asp page to search for data. I like to open it in a new window while retain the search values. And I also can resize the window as well as set its attributes like
height, width,etc.

I created a js function like this:

function posttopopup(formname, windowname)
if (! window.focus)return true;
window.open('', windowname);
return true;

on my asp search page:

<form method="post" action=search.asp" onSubmit="posttopopup(this, 'popupwindow')">
<input type="button" name="Submit1" value="Search" onclick="if (isDate()) document.Search.submit();">

I keep getting errors like "document.search has no value..."

What did I do wrong?