if (input.createTextRange) {
    var range = input.createTextRange();
    range.collapse(true);
    range.moveEnd('character',selectionEnd);
    range.moveStart('character',selectionStart);
    range.select();
} else if (input.setSelectionRange) {
    input.focus();
    input.setSelectionRange(selectionStart,selectionEnd);
}
return this;

};

$.fn.focusEnd = function() {
this.setCursorPosition(this.val().length);
};