(function ($) {
    $.fn.WatermarkTxt = function (o) {
        o = $.extend({
            cssclass:'mostyle'
        }, o || {});
        return this.each(function () {
           var val;
                var $this=$(this);
                var cssclass=o.cssclass;
                $this.addClass(cssclass).focusin(function(){
                    if($this.hasClass(cssclass)){
                        val=$this.val();
                        $this.val("").removeClass(cssclass);
                    }
                }).focusout(function(){
                     if($this.val()==""){
                        $this.val(val).addClass(cssclass);
                    }
                })
        });
    }
})(jQuery);