(function() {



////////////////////////

function reply(author, commentId, commentBox,thread) {
	if(thread){
		document.getElementById('comment_parent').value = commentId;
		document.getElementById(commentBox).focus();
	}else{
		var insertStr = '<a href="#comment-' + commentId + '"><strong>@' + author + '</strong></a>, \n';
		appendReply(insertStr, commentBox);	
	}
}

function quote(author, commentId, commentBodyId, commentBox) {
	var comment = MGJS.$(commentBodyId).innerHTML;

	var insertStr = '<blockquote cite="#' + commentBodyId + '">';
	insertStr += '\n<a href="#' + commentId + '"><strong>' + author + '</strong></a>: ';
	insertStr += comment.replace(/\t/g, "");
	insertStr += '</blockquote>\n';

	insertQuote(insertStr, commentBox);
}

function appendReply(insertStr, commentBox) {
	if(MGJS.$(commentBox) && MGJS.$(commentBox).type == 'textarea') {
		field = MGJS.$(commentBox);
	} else {
		alert("The comment box does not exist!");
		return false;
	}

	if (field.value.indexOf(insertStr) > -1) {
		return false;
	}

	if (field.value.replace(/\s|\t|\n/g, "") == '') {
		field.value = insertStr;
	} else {
		field.value = field.value.replace(/[\n]*$/g, "") + '\n\n' + insertStr;
	}
	field.focus();
}

function insertQuote(insertStr, commentBox) {
	if(MGJS.$(commentBox) && MGJS.$(commentBox).type == 'textarea') {
		field = MGJS.$(commentBox);
	} else {
		alert("The comment box does not exist!");
		return false;
	}

	if(document.selection) {
		field.focus();
		sel = document.selection.createRange();
		sel.text = insertStr;
		field.focus();

	} else if (field.selectionStart || field.selectionStart == '0') {
		var startPos = field.selectionStart;
		var endPos = field.selectionEnd;
		var cursorPos = startPos;
		field.value = field.value.substring(0, startPos)
					  + insertStr
					  + field.value.substring(endPos, field.value.length);
		cursorPos += insertStr.length;
		field.focus();
		field.selectionStart = cursorPos;
		field.selectionEnd = cursorPos;

	} else {
		field.value += insertStr;
		field.focus();
	}
}

window['MGJS_CMT'] = {};
window['MGJS_CMT']['reply'] = reply;
window['MGJS_CMT']['quote'] = quote;
//window['MGJS_CMT']['init']  = init;

})();