E-Check Link - Please Help

[sammybotz]

The below code is from the e-check payment gateway module. When a customer attempts to pay using this form I need a different URL to pop up than the standard box that pops up now. I have tried replacing systemurl below with my URL I want but it's not working. I am not a php programmer, sorry

 

Can someone please be kind enough to tell me how to do this? Thanks very much

 

 

$code='<input type="button" value="'.$params['langpaynow'].'" onClick="window.open(\''.$params['systemurl'].'/echeckpayment.php?invoicenumber='.$params['invoiceid'].'\',\'paymentfrm\',\'width=430,height=420\');return false">';