(function($) {
    $.fn.extend({
        insertContent: function(myValue, t) {
            var $t = $(this)[0];
            if (document.selection) { //ie
                this.focus();
                var sel = document.selection.createRange();
                sel.text = myValue;
                this.focus();
                sel.moveStart('character', -l);
                var wee = sel.text.length;
                if (arguments.length == 2) {
                    var l = $t.value.length;
                    sel.moveEnd("character", wee + t);
                    t <= 0 ? sel.moveStart("character", wee - 2 * t - myValue.length) : sel.moveStart("character", wee - t - myValue.length);
                    sel.select();
                }
            } else if ($t.selectionStart || $t.selectionStart == '0') {
                var startPos = $t.selectionStart;
                var endPos = $t.selectionEnd;
                var scrollTop = $t.scrollTop;
                $t.value = $t.value.substring(0, startPos) + myValue + $t.value.substring(endPos, $t.value.length);
                this.focus();
                $t.selectionStart = startPos + myValue.length;
                $t.selectionEnd = startPos + myValue.length;
                $t.scrollTop = scrollTop;
                if (arguments.length == 2) {
                    $t.setSelectionRange(startPos - t, $t.selectionEnd + t);
                    this.focus();
                }
            }
            else {
                this.value += myValue;
                this.focus();
            }
        }
    })
})(jQuery);