function bbcode_ins(fieldId, tag)
{
	field=document.getElementById(fieldId);
	
	if(tag=='b' || tag=='i' || tag=='u' || tag == 'otsikko')
	{
		if(document.selection)
		{
			field.focus();
			var selected = document.selection.createRange().text;
			var ins = '[' + tag + ']' + selected + '[/' + tag +']';
			var selected2 = document.selection.createRange();
			var sel = document.selection.createRange();
			selected2.moveStart ('character', -field.value.length);
			sel.text = '[' + tag + ']' + selected + '[/' + tag+']';
			sel.moveStart('character', selected2.text.length + ins.length - selected.length);
		}
		//MOZILLA/NETSCAPE/SAFARI support
		else if(field.selectionStart || field.selectionStart == 0)
		{
			var startPos = field.selectionStart;
			var endPos = field.selectionEnd;
			var selected = field.value.substring(startPos, endPos);
			var ins = '[' + tag + ']' + selected + '[/' + tag +']';
			field.focus();
			field.value = field.value.substring(0, startPos) + ins + field.value.substring(endPos, field.value.length);
			field.setSelectionRange(endPos+ins.length, endPos+ins.length-selected.length);
		}
	}
	else if(tag == 'url')
	{
		var url = prompt('Linkin URL-osoite:', 'http://');
		var linkText = prompt('Linkin nimi:', '');
		
		if(!url || !linkText)
		{
			return;
		}
		
		if(document.selection)
		{
			field.focus();

			var selected = document.selection.createRange().text;
			var ins = '[url='+url+']' + linkText + '[/url]';
			var selected2 = document.selection.createRange();
			var sel = document.selection.createRange();
			sel.text = '[url='+url+']' + linkText + '[/url]';
			selected2.moveStart ('character', -field.value.length);
			sel.moveStart('character', selected2.text.length + ins.length - selected.length);
		}
		//MOZILLA/NETSCAPE/SAFARI support
		else if(field.selectionStart || field.selectionStart == 0)
		{
			var startPos = field.selectionStart;
			var endPos = field.selectionEnd;
			var ins = '[' + tag + '='+url+']' + linkText + '[/' + tag+']';
			field.focus();
			field.value = field.value.substring(0, startPos)
			+ ins
			+ field.value.substring(endPos, field.value.length);
			field.setSelectionRange(endPos+ins.length, endPos+ins.length-selected.length);
		}
	}
}