/**
* Insert content at caret position (converted to jquery function)
* @link 
http://alexking.org/blog/2003/06/02/inserting-at-the-cursor-using-javascript
*/
$.fn.insertAtCaret = function(myValue) {
    return this.each(function() {
        //IE support
        if (document.selection) {
            this.focus();
            sel = document.selection.createRange();
            sel.text = myValue;
            this.focus();
        }
        //MOZILLA/NETSCAPE support
        else if (this.selectionStart || this.selectionStart == '0') {
            var startPos = this.selectionStart;
            var endPos = this.selectionEnd;
            var scrollTop = this.scrollTop;
            this.value = this.value.substring(0, startPos)
                                      + myValue
                              + this.value.substring(endPos, this.value.length);
            this.focus();
            this.selectionStart = startPos + myValue.length;
            this.selectionEnd = startPos + myValue.length;
            this.scrollTop = scrollTop;
        } else {
            this.value += myValue;
            this.focus();
        }
    });

};