(function($){
	$.extend({
			 
		uniqueArr: function(array){
			var ret=[],done={};
			for (var i = 0, length = array.length; i < length; i++ )
			{
				var temp=array[i];
				if(!done[temp])
				{
					done[temp]=true;
					ret.push(temp);
				}
			}
			return ret;
		},
		
		queryString: function(name,def){
			var qs=name+"=";
			var str=location.search;
			if(str.length>0){
				begin=str.indexOf(qs);
				if(begin!=-1){
					begin+=qs.length;
					end=str.indexOf("&",begin);
					if(end==-1)end=str.length;
					return(str.substring(begin,end));
				}
			}
			if(def==null)
			{
				return 0;
			}else{
				return def;
			}
		},
		
		cookie: function(name, value, options) {
			if (typeof value != 'undefined') {
				options = options || {};
				if (value === null) {
					value = '';
					options.expires = -1;
				}
				var expires = '';
				if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
					var date;
					if (typeof options.expires == 'number') {
						date = new Date();
						date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
					} else {
						date = options.expires;
					}
					expires = '; expires=' + date.toUTCString();
				}
				var path = options.path ? '; path=' + (options.path) : '';
				var domain = options.domain ? '; domain=' + (options.domain) : '';
				var secure = options.secure ? '; secure' : '';
				document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
			} else {
				var cookieValue = null;
				if (document.cookie && document.cookie != '') {
					var cookies = document.cookie.split(';');
					for (var i = 0; i < cookies.length; i++) {
						var cookie = jQuery.trim(cookies[i]);
						if (cookie.substring(0, name.length + 1) == (name + '=')) {
							cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
							break;
						}
					}
				}
				return cookieValue;
			}
		}
		
		
	});
})(jQuery);