can someone check this small javascript validation please

 <script type="text/javascript">
<!--
 currentURL = iframe.location.href;
function validate_form ( )
{
    valid = true;
   
	
    if ( iframe.location.href; == "currentURL" )
    {
        alert ( "Please crop your image" );
        valid = false;
    }

    return valid;
}

//-->
</script>

Code (markup):

 <form action='http://www.romancart.com/cart.asp' method=post target=_parent onSubmit="return validate_form( );">

Code (markup):

Basically the before the order form submits it should check the too see if the iframe src has been changed.

but its doesnt work and form just gets submitted,
thanks

 

change

    if ( iframe.location.href; == "currentURL" )

Code (markup):

to

    if ( iframe.location.href == currentURL )

Code (markup):