var MaxLength={keyCodes:[8,13,16,17,18,33,34,35,36,37,38,39,40,46],addControl:function(a,b){a.onkeypress=function(c){MaxLength.restrict(c,a,b)};a.onkeyup=function(){MaxLength.substring(a,b)}},restrict:function(a,d,c){var b=a.charCode||a.keyCode;if(d.value.length>=c&&MaxLength.contains(b)==false){a.preventDefault&&a.preventDefault();return false}},substring:function(a,b){if(a.value.length>b)a.value=a.value.substring(0,b)},contains:function(b){for(var a=0;a<MaxLength.keyCodes.length;a++)if(MaxLength.keyCodes[a]==b)return true;return false}}