//ACCOUNT 公用函数

		/**
		 * 去空格
		 * @param str
		 * @return
		 */
		function trim(str) {
			return str.replace(/^\s*(.*?)[\s\n]*$/g, '$1');
		}
		
		
		
		/**
		 * PHP BASE64_DECODE对应函数
		 * @param data
		 * @return
		 */
		function base64_decode (data) {

		 
			var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
			var o1, o2, o3, h1, h2, h3, h4, bits, i = 0, ac = 0, dec = "", tmp_arr = [];
		 
			if (!data) {
				return data;
			}
		 
			data += '';
		 
			do {  // unpack four hexets into three octets using index points in b64
				h1 = b64.indexOf(data.charAt(i++));
				h2 = b64.indexOf(data.charAt(i++));
				h3 = b64.indexOf(data.charAt(i++));
				h4 = b64.indexOf(data.charAt(i++));
		 
				bits = h1<<18 | h2<<12 | h3<<6 | h4;
		 
				o1 = bits>>16 & 0xff;
				o2 = bits>>8 & 0xff;
				o3 = bits & 0xff;
		 
				if (h3 == 64) {
					tmp_arr[ac++] = String.fromCharCode(o1);
				} else if (h4 == 64) {
					tmp_arr[ac++] = String.fromCharCode(o1, o2);
				} else {
					tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);
				}
			} while (i < data.length);
		 
			dec = tmp_arr.join('');
			dec = this.utf8_decode(dec);
		 
			return dec;
		}


		/**
		 * UTF-8 解码成ISO字符
		 * @param str_data
		 * @return
		 */
		function utf8_decode ( str_data ) {
			// Converts a UTF-8 encoded string to ISO-8859-1  
			// 
			// version: 909.322
			// discuss at: http://phpjs.org/functions/utf8_decode
			// +   original by: Webtoolkit.info (http://www.webtoolkit.info/)
			// +      input by: Aman Gupta
			// +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
			// +   improved by: Norman "zEh" Fuchs
			// +   bugfixed by: hitwork
			// +   bugfixed by: Onno Marsman
			// +      input by: Brett Zamir (http://brett-zamir.me)
			// +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
			// *     example 1: utf8_decode('Kevin van Zonneveld');
			// *     returns 1: 'Kevin van Zonneveld'
			var tmp_arr = [], i = 0, ac = 0, c1 = 0, c2 = 0, c3 = 0;
			
			str_data += '';
			
			while ( i < str_data.length ) {
				c1 = str_data.charCodeAt(i);
				if (c1 < 128) {
					tmp_arr[ac++] = String.fromCharCode(c1);
					i++;
				} else if ((c1 > 191) && (c1 < 224)) {
					c2 = str_data.charCodeAt(i+1);
					tmp_arr[ac++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));
					i += 2;
				} else {
					c2 = str_data.charCodeAt(i+1);
					c3 = str_data.charCodeAt(i+2);
					tmp_arr[ac++] = String.fromCharCode(((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
					i += 3;
				}
			}
		
			return tmp_arr.join('');
		}