//去除空格
function trim(str)
{
  return str.replace(/\s|\xA0/g,"");
}

/**
*js数组转json
*
*/
function arrayToJson(o) {
 var r = [];
 if (o==undefined||o==null) return "null";
 if (typeof o == "string") return "\"" + o.replace(/([\'\"\\])/g, "\\$1").replace(/(\n)/g, "\\n").replace(/(\r)/g,
"\\r").replace(/(\t)/g, "\\t") + "\"";
 if (typeof o == "object") {
 if (!o.sort) {
 for (var i in o)
 r.push(i + ":" + arrayToJson(o[i]));
 if (!!document.all && !/^\n?function\s*toString\s*\{\n?\s*

\n?\s*\}\n?\s*$/.test(o.toString)) {
 r.push("toString:" + o.toString.toString());
 }
 r = "{" + r.join() + "}";
 } else {
 for (var i = 0; i < o.length; i++) {
 r.push(arrayToJson(o[i]));
 }
 r = "[" + r.join() + "]";
 }
 return r;
 }
 return o.toString();
}

/**
*js数组转json(改进,key值加引号)
*
*/
function arrayToJson(o) {
 var r = [];
 if (o==undefined||o==null) return "null";
 if (typeof o == "string") return "\"" + o.replace(/([\'\"\\])/g, "\\$1").replace(/(\n)/g, "\\n").replace(/(\r)/g,
"\\r").replace(/(\t)/g, "\\t") + "\"";
 if (typeof o == "object") {
 if (!o.sort) {
 for (var i in o)
 r.push(""\"+i +""\"+ ":" + arrayToJson(o[i]));
 if (!!document.all && !/^\n?function\s*toString\s*\{\n?\s*

\n?\s*\}\n?\s*$/.test(o.toString)) {
 r.push("toString:" + o.toString.toString());
 }
 r = "{" + r.join() + "}";
 } else {
 for (var i = 0; i < o.length; i++) {
 r.push(arrayToJson(o[i]));
 }
 r = "[" + r.join() + "]";
 }
 return r;
 }
 return o.toString();
}