function add_comment()
{
	document.getElementById('commentbox').style.display = 'block';
}

function submit_comment()
{
	cForm = document.commentForm;
	codes = new Array();
	codes[0] = cForm.code1.value*1;
	codes[1] = cForm.code2.value*1;
	codes[2] = cForm.code3.value*1;
	codes[3] = cForm.code4.value*1;
	code = cForm.code.value;
	codeTable = new Array('0','1','2','3','4','5','6','7','8','9','q','w','e','r','t','y','u','i','o','p','a','s','d','f','g','h','j','k','l','z','x','c','v','b','n','m','Q','W','E','R','T','Z','U','I','O','P','A','S','D','F','G','H','J','K','L','Y','X','C','V','B','N','M');
	
	error = 0;
	for(i=0; i<4; i++)
	{
		value = codes[i] + codes[3];
		value = value % codeTable.length;
		value = codeTable[value];
		if(value != code[i]) error=1;
	}
	if(code=='') alert('Wprowad¼ kod');
	else if(error) alert('Wprowadzony kod jest niepoprawny');
	else cForm.submit();
}

function render_token_image()
{
	cForm = document.commentForm;
	cForm.code1.value = Math.round(Math.random() * 5000);
	cForm.code2.value = Math.round(Math.random() * 5000);
	cForm.code3.value = Math.round(Math.random() * 5000);
	cForm.code4.value = Math.round(Math.random() * 5000);
	cForm.code.value = '';
	document.getElementById('token').src="tokenizer/tokenizer.php?txt="+cForm.code1.value+","+cForm.code2.value+","+cForm.code3.value+"&r="+cForm.code4.value;
	
}