function activateInvoice(){
	if(document.getElementById('active_inv').checked == true){
		for(i=1; i<=6; i++)
			document.getElementById('inv_'+i).disabled = "";
	}else {
		for(i=1; i<=6; i++)
			document.getElementById('inv_'+i).disabled = true;
	}
}

function closeImg(){
		 document.getElementById('showbig').style.display = 'none';
}

function show(foto){
		document.getElementById('showbig').innerHTML='<table style="margin-left: auto; margin-right: auto; padding:10px; background-color: #FFFFFF; border: 1px solid #000;"><tr><td><img onclick="closeImg()" class="no_border" src="'+foto+'" alt="" /><div style="margin-top: 5px; font-weight: bold; color: #000000; font-size: 12px;cursor: pointer;" onclick="closeImg()">zamknij</div></td></tr></table>';
		document.getElementById('showbig').style.display = 'block';
}