(function(a){a.fn.char_limit=function(b){var c={limit:30,limit_block:"",limit_count:"",speed:"normal",descending:true};var d=a.extend(c,b);return this.each(function(f){var g=a(this);function e(){var h=(d.descending)?d.limit-g.val().length:g.val().length;d.limit_count.text((h<0?0:h))}e();g.keydown(function(h){if(g.val().length>=d.limit&&h.keyCode!="8"&&h.keyCode!="9"&&h.keyCode!="46"&&h.keyCode!="33"&&h.keyCode!="34"&&h.keyCode!="35"&&h.keyCode!="36"&&h.keyCode!="37"&&h.keyCode!="38"&&h.keyCode!="39"&&h.keyCode!="40"){h.preventDefault()}e()}).keyup(function(h){if(g.val().length>=d.limit){g.val(g.val().substr(0,d.limit))}e()}).focus(function(){e()}).blur(function(){})})}})(jQuery);