function ahrefThis() {
	if (document.selection)
		strSelection = document.selection.createRange().text;
	else
		strSelection = '';
		
	strHref = prompt("Create a link to:","http://");
	if (strHref == null) return;
	
	var textpre = "<a href=\"" + strHref.replace(/&/g,'&') + "\" target=\"_blank\">";
	insertAroundCaret(textpre, "</a>");
}

// stores the caret
var lastSelected, lastCaretPos;
function storeCaret (textEl) {

	// store caret
	if (textEl.createTextRange) 
		lastCaretPos = document.selection.createRange().duplicate();

	// also store lastselectedelement
	lastSelected = textEl;
	
	nonie_FormType = textEl.name;

	scrollTop = textEl.scrollTop;
}


// inserts text at caret (overwriting selection)
function insertAtCaret (text) {
	var textEl = lastSelected;
	if (textEl && textEl.createTextRange && lastCaretPos) {
		var caretPos = lastCaretPos;
		caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? text + ' ' : text;
	} else if (!document.all && document.getElementById) {
		mozReplace(document.getElementById('input' + nonie_FormType), text);
		if(scrollTop>-1) {
			document.getElementById('input' + nonie_FormType).scrollTop = scrollTop;
		}
	} else if (textEl) {
		textEl.value  += text;
	} else {
		document.getElementById('input' + nonie_FormType).value += text;		
		if(scrollTop>-1) {
			document.getElementById('input' + nonie_FormType).scrollTop = scrollTop;
		}
	}
	updAllPreviews();
}

// inserts a tag around the selected text
function insertAroundCaret (textpre, textpost) {
	var textEl = lastSelected;
	
	if (textEl && textEl.createTextRange && lastCaretPos) {
		var caretPos = lastCaretPos;
		caretPos.text = textpre + caretPos.text + textpost;
	} else if (!document.all && document.getElementById) {
		mozWrap(document.getElementById('input' + nonie_FormType), textpre, textpost);
		if(scrollTop>-1) {
			document.getElementById('input' + nonie_FormType).scrollTop = scrollTop;
		}
	} else {
		document.getElementById('input' + nonie_FormType).value += textpre + textpost;
		if(scrollTop>-1) {
			document.getElementById('input' + nonie_FormType).scrollTop = scrollTop;
		}
	}

	updAllPreviews();
}


/* some methods to get things working in Mozilla as well */
function mozWrap(txtarea, lft, rgt) {
	var selLength = txtarea.textLength;
	var selStart = txtarea.selectionStart;
	var selEnd = txtarea.selectionEnd;
	if (selEnd==1 || selEnd==2) selEnd=selLength;
	var s1 = (txtarea.value).substring(0,selStart);
	var s2 = (txtarea.value).substring(selStart, selEnd)
	var s3 = (txtarea.value).substring(selEnd, selLength);
	txtarea.value = s1 + lft + s2 + rgt + s3;
}
function mozReplace(txtarea, newText) {
	var selLength = txtarea.textLength;
	var selStart = txtarea.selectionStart;
	var selEnd = txtarea.selectionEnd;
	if (selEnd==1 || selEnd==2) selEnd=selLength;
	var s1 = (txtarea.value).substring(0,selStart);
	var s2 = (txtarea.value).substring(selStart, selEnd)
	var s3 = (txtarea.value).substring(selEnd, selLength);
	txtarea.value = s1 + newText + s3;
}
function mozSelectedText() {
	var txtarea = document.getElementById('input' + nonie_FormType);
	var selLength = txtarea.textLength;
	var selStart = txtarea.selectionStart;
	var selEnd = txtarea.selectionEnd;
	if (selEnd==1 || selEnd==2) selEnd=selLength;
	return (txtarea.value).substring(selStart, selEnd);
}