function insertText(text, areaId) {

    var textarea = jQuery('#' + areaId);

    if (document.selection) { // IE

        var selLength;

        textarea.focus();

        sel = document.selection.createRange();

        selLength = sel.text.length;

        sel.text = text;

        sel.moveStart('character', selLength-text.length);

        sel.select();

    } else if (textarea.selectionStart || textarea.selectionStart == '0') { // mozilla

        var startPos = textarea.selectionStart;

        var endPos = textarea.selectionEnd;

	// insert text so that it replaces the [startPos, endPos] part

        textarea.value = textarea.value.substring(0,startPos) + text + textarea.value.substring(endPos,textarea.value.length);

	// set cursor pos at the end of the inserted text

        textarea.selectionStart = textarea.selectionEnd = startPos+text.length;

        textarea.focus();

    } else { // safety belt for other browsers

        textarea.value += text;

    }

}