Help for javacript for submit the form

[apcmlee]

Dear all,

I would like to submit the form and direct to the new page with fixed size but without scrollbar, menubar, as follow

=================================
<form name="formsearch" method="post" action="/update/search.php" target="new" onSubmit="return CheckForm2()">Product
<input type="text" name="product">
<input type="submit" name="Submit" value="Search">

</div></form>

with the javascript to check the validity of the input

<script language="JavaScript">
function CheckForm2()
{
if(document.formsearch.product.value==""){
document.formsearch.product.focus();
alert ("Please input product name!");
return false;
}
window.open('this.href','child','scrollbars=no,menubars=no,toolbars=no,width=500,height=550')
return true;

}

However, the link is not valid, please help me a helping hand, thanks

Regards,
Simon