function insertBB(txtID, start, end) 
{
	element = document.getElementById(txtID);
	
	if (document.selection) 
	{
		element.focus();
		sel = document.selection.createRange();
		sel.text = start + sel.text + end;
	} 
	else if (element.selectionStart || element.selectionStart == '0') 
	{
		element.focus();
		var startPos = element.selectionStart;
		var endPos = element.selectionEnd;
		element.value = element.value.substring(0, startPos) + start + element.value.substring(startPos, endPos) + end + element.value.substring(endPos, element.value.length);
	} 
	else 
	{
		element.value += start + end;
	}
	
	return false;
}