function generate_fields ( inform ) {
  
		sku = '13924:1,';
		if (inform.add_raincoat.checked == true) {
			sku += '13966:1,';
		}
	
  inform.ProdList.value = sku;
}

function handleform ( inform ) {
 var errmsg = '';

// NB: secondary conditional statements below are due to NN 4.x hack

 if ( errmsg ) { alert (errmsg); return false; }
 else { generate_fields( inform ); return true; }
}