unix时间戳转化

var unixtime=1358932051;
var unixTimestamp = new Date(unixtime* 1000); 
commonTime = unixTimestamp.toLocaleString();
alert("普通时间为："+commonTime);

var str ="2013-01-01 00:00:00";
str = str.replace(/-/g,"/");
var date = new Date(str); 
var humanDate = new Date(Date.UTC(date.getFullYear(),date.getMonth(),date.getDate(),date.getHours(),date.getMinutes(), date.getSeconds())); 
alert(humanDate.getTime()/1000 - 8*60*60);